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Preprints of the National Meeting of JWS

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Grain boundary engineering of 347 austenitic stainless steel

Kohei Kurihara, Shinya Sato, Hiroyuki Kokawa, Yutaka Sato

Session ID: 420
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.151.0

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Effect of grain boundary engineering on creep properties of 304 austenitic stainless steel

Tetsuya Oyamada, Masayuki Shimada, Wei Zhong Jin, Hiroyuki Kokawa, Yut ...

Session ID: 421
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.152.0

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Development of numerical model to predict micro segregation during welding solidification coupling with thermodynamic database

Modeling of solidification cracking in austenitic stainless steel weld metal (4)

Takahiro Osuki, Kouji Moriguchi, Kazuhiro Ogawa

Session ID: 422
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.153.0

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Effect of P on HAZ cracking susceptibility of fully austenitic stainless steel with different P content

Development of numerical model to predict of HAZ cracking susceptibility on fully austenitic high alloy steel(Report 1)

KANA JOTOKU, TAKAHIRO OSUKI, KAZUHIRO OGAWA

Session ID: 423
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.154.0

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Effects of Contents of P and S and Solidification Mode in Weld Metal on Solidification Crack Susceptibility in Laser Welds of Type 316L Austenitic Stainless Steels

Fumiya OURA, Yuuma NAKABAYASHI, Hiroaki MORI, Kazutoshi NISHIMOTO

Session ID: 424
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.155.0

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To clarify the effects of P+S contents and solidification mode on solidification crack susceptibility in laser welds of type 316L stainless steels, the preloading tensile strain cracking test was adopted. The solidification cracking occurs, when P+S contents exceed the threshold.

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Microscopic Observation of Inclusions Related to Acicular Ferrite Formation in Steel Weld Metal (Report4)

TOMONORI YAMADA, HIDENORI TERASAKI, YU-ICHI KOMIZO

Session ID: 425
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.156.0

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In previous report1), the Baker-Nutting orientation relationship was satisfied between acicular ferrite and Ti-enriched layer which was analysed as TiO on the inclusion surface. In the present study, inclusion surface was investigated in another tested material.

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Influence of Ni composition to retained austenite distribution in 980MPa class high-tensile steel weld metal

Atsushi Shimada, Saad Ahmed Khodir, Makoto Takahashi, Toshiya Shibayan ...

Session ID: 426
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.157.0

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PWHT Temperature of welded high-Cr ferritic heat-resistant steel

LIANG CHEN, KEN YAMASHITA

Session ID: 427
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.158.0

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In order to achieve optimum properties for welded high-Cr ferrite heat-resistant steel, proper PWHT condition is necessary. Ac1 is measured by various methods, and the proper PWHT temperature is proposed based on both of Ac1 and mechanical properties.

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A study of formation mechanism of intragranular ferrite in the HAZ of low carbon steel

KOSHIRO KAGESHIMA, HIDENORI TERASAKI, YU-ICHI KOMIZO

Session ID: 428
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.159.0

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The intragranular ferrite formation behavior from inclusions was observed by laser scanning confocal microscopy. The inclusions related to intragranular ferrite formation were analyzed by both an energy-dispersive X-ray spectrometer and transmission electron microscopy.

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Effects of the different element in the periodic table on the iron bonding state

Wataru TAKAHARA

Session ID: 429
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.160.0

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Modeling of Long-Term Phase Stability of Austenitic Heat Resistant Steel Weld Metal during High Temperature Service

HIROYUKI HIRATA, KAZUHIRO OGAWA

Session ID: 430
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.161.0

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Modelling of Retained Austenite Formation in Triplex Stainless Steel Weld Metals

Kazuyoshi Saida, Arata Hayata, Kazutoshi Nishimoto

Session ID: 431
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.162.0

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The formation kinetics of austenite retained in the triplex stainless steel weld metals was formulated. The calculated amounts of retained austenite were consistent with those found by experiment. The retained austenite formation could therefore be predicted.

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Numerical Analysis of Formability during Pipe Expanding for Exhaust Pipe with Heat-resistant Ferritic Stainless Steels

Makoto OKADA, Hiroki TOKUICHI, Hiroaki MORI, Kazutoshi NISHIMOTO

Session ID: 432
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.163.0

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Bulge test was conducted to evaluate formability in exhaust pipes with ferritic stainless steels. From test results, though the pipes by GTAW were fractured at weld metal, those by LBW burst in base metal. From calculation, strain markedly concentrates at weld metal in GTAWs.

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Observation of Hydrogen Distribution in 980 MPa Class High-strength Steel by Hydrogen Micro-printing Technique

Saad Ahmed Khodir, Atsushi Shimada, Makoto Takahashi, Toshiya Shibayan ...

Session ID: 433
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.164.0

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The effect of Solidification mode on cold cracking of weld metal

NAOYA HAYAKAWA, KENJI OI, FUMIMARU KAWABATA, MORIAKI ONO

Session ID: 434
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.165.0

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Hydrogen evolution from the welded joints with austenitic martensitic microstructures

Tadashi Kasuya, Yuzi Hashiba, Hiroshige Inoue

Session ID: 435
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.166.0

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Hydrogen evolutions from the welded joint with austenitic martensitic microstructures were measured. Hydrogen was released for about 100 days, and the good agreement between the experiments and the calculations with the analytic solution was obtained.

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Diffusible hydrogen content in laser weld metal of high tensile strength steel

Hiroyuki SUMI, Kenji OI, Moriaki ONO, Koichi YASUDA

Session ID: 436
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.167.0

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Study on Diffusible Hydrogen Distribution in Multi-layer Weld of Cr-Mo-V Steel

Masamitsu Abe, Mitsuyoshi Nakatani, Naomi Namatame, Toshio Terasaki, S ...

Session ID: 437
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.168.0

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Ta effects of weld cracking susceptibility on reduced activation ferritic steels.

Hiroyuki OGIWARA, Hiroki TOKUICHI, Hiroaki MORI, Kazutoshi NISHIMOTO, ...

Session ID: 438
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.169.0

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Mechanical stability of retained austenite in weld steel under high strain rate

Hong Zuo, Hai Qiu, Fuxing Yin, K Hiraoka

Session ID: 439
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.170.0

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Effect of Layer thickness of Cr-Mo-V steel weldments for Charpy absorbed energy

Daisuke ABE, TAKAAKI MATSUOKA, Hiroto YAMAOKA, Yasuaki MORISE

Session ID: 440
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.171.0

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Effect of Grain Size on Solidification Cracking Susceptibility

peng wen, kenji shinozaki, motomichi yamamoto, kouta kadoi, yusuke kou ...

Session ID: 441
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.172.0

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Numerical Simulation on the Effect of Microscopic Residual Stress on the Occurence of Stress Corrosion Cracks

Yoshiki MIKAMI, Keisuke SOGABE, Ryosuke URAGUCHI, Masahito MOCHIZUKI

Session ID: 442
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.173.0

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An Evaluation of SR Cracking Susceptibility in Modified Cr-Mo Steel Weld Metals (Report 3)

-Measuring Notch Opening Displacement by In-Situ Observation Techniques. -

Kenji Kubo, Yuichi Komizo, Hidenori Terasaki, Ken Yamashita, Mikihiro ...

Session ID: 443
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.174.0

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Using the in-situ observation techniques reported at report 1, we measured and compared the critical crack opening displacement. V-added samples showed smaller critical crack opening displacement compared with non-added and Nb-added.

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Trackign of solid-state trasformation process of steel weld

Hidenori Terasaki, Kyota Maeno, Koji Moriguchi, Yu-ichi Komizo

Session ID: 444
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.175.0

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Development of SMAW with high notch toughness for YP500MPa class high strength steel

Peng Han, Makoto Ota, Kojiro Nakanishi

Session ID: 445
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.176.0

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in-situ observation of residual liquid metal at the solidification front during laser welding

peng wen, kenji shinozaki, motomichi yamamoto, kouta kadoi, yasutaka s ...

Session ID: 446
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.177.0

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Neural Network Visual Inspection with learning good-defect boundary based on the distance index in principal component input space

Michiya Matsushima, Akira Soeda, Hiroyuki Fujie, Kozo Fujimoto

Session ID: 447
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.178.0

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Impact test of lead-free solder bump using laser soldering process

Noriya IWATA, Hiroshi NISHIKAWA, Tadashi TAKEMOTO

Session ID: 448
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.179.0

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Numerical simulation of deformation behavior during ultrasonic bonding of wiring material for power device

Yusuke Oyama, Hideki Kitamura, Masakatsu Maeda, Yasuo Takahashi

Session ID: 449
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.180.0

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Effect of substrate features on ultrasonic wire bonding

Yuji Ikehata, Masakatsu Maeda, Yasuo Takahashi

Session ID: 450
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.181.0

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Formation of Ohmic Contact on GaN

Motoki Arai, Masakatsu Maeda, Yasuo Takahashi

Session ID: 451
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.182.0

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Electric properties of Ohmic contact formed on p-type 4H-SiC

Yoshitaka Kimura, Masakatsu Maeda, Yasuo Takahashi

Session ID: 452
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.183.0

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Design of quick grip-release mechanism using multi-beam structure

Miaomiao Wang, Yu Sekiguchi, Kunio Takahashi, Pasomphone Hemthavy

Session ID: 453
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.184.0

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Experimental estimation method for the microscopic residual stress and strain conditions in Ferrite-Martensite Lamellar Steels

Akihiro INAO, Yoshiki MIKAMI, Hiroshi SHIMANUKI, Masahito MOCHIZUKI

Session ID: 454
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.185.0

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In ferrite-martensite lamellar steels, the microscopic residual stress due to the manufacturing is one of the reasons for improving fatigue strength. In this study, measurement of strain by EBSP-OIM was performed for quantitative estimation of the microscopic residual stress.

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Analytical Evaluations of Residual Stress Distributions Generated by Surface Machining in Austenitic Stainless Steel Welded Zone

Ryohei IHARA, Jinya KATSUYAMA, Kunio ONIZAWA, Tadafumi HASHIMOTO, Yosh ...

Session ID: 455
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.186.0

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SCC has been observed near the weld zone of pipes made of SUS316L. Residual stress distributions generated by welding and surface machining play an important role in the occurrence and propagation of SCC. Calculation and evaluation of residual stress distributions were performed.

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A Consideration on Prediction of Welding Imperfection Generated in Un-stiffened Plates

Do-Hyun PARK, Mikihito HIROHATA, You-Chul KIM

Session ID: 456
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.187.0

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When steel structures are fabricated, welding imperfection is generated. Thus, for estimation of their soundness, it is needed to predict welding imperfection. In this paper, treatment of boundary condition is examined on prediction of welding imperfection in un-stiffened plate.

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Study on site welding beam-to-column joints used the drilled flange method

Part3 Influence the hole position, Outline of experiment

Kazuma Tobori, Tadao Nakagomi, Kazunori Hattori, Yoshihiro Sakino, Yos ...

Session ID: 457
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.188.0

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Study on site welding beam-to-column joints used the drilled flange method

Part4 Influence of the hole position Result of experiment and consideration

Kazunori Hattori, Tobori Nakagomi, Yoshihiro Sakino, Kazuma Tobori, Yo ...

Session ID: 458
Published: 2009
Released on J-STAGE: November 20, 2009

DOIhttps://doi.org/10.14920/jwstaikai.2009f.0.189.0

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