Journal of Japan Institute of Light Metals
Online ISSN : 1880-8018
Print ISSN : 0451-5994
ISSN-L : 0451-5994
Search
Advanced search
OR
Browse
Search
Volume 66, Issue 3
Displaying 1-4 of 4 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
RESEARCH ARTICLE
  • Production of high purity magnesium from Mg–Al–Ca system alloy by vacuum distillation and corrosion resistance and tensile properties of its extrusions
    Makoto Inoue, Kazuo Matsuzawa, Tetsuo Aida, Masahiko Takahiro
    Article type: RESEARCH ARTICLE
    2016 Volume 66 Issue 3 Pages 119-123
    Published: March 30, 2016
    Released on J-STAGE: April 30, 2016
    DOIhttps://doi.org/10.2464/jilm.66.119
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    In order to improve the property of high purity magnesium produced from Mg–Al–Ca alloy, vacuum distillation and extrusion method has been employed. The vacuum distillation with the raw material temperature of 600°C, condenser temperature of 310–350°C, and purification time at 8 h is able to control the amount of impurity such as Fe, Ni and Cu less than 0.0003%. The efficiency of purification and condenser condensate of alloy is achieved nearly 90%. The corrosion rate of high purity magnesium after extruded at 300–375°C and extrusion ratio of 100 is about 0.4 mm/y, which is better than that of purity 99.99% magnesium. Further, the tensile strength of extruded specimen is about 200 MPa, and the elongation is about 15%.
    View full abstract
    Download PDF (803K)
  • Effect of cooling conditions of the core pin to its surface temperature and to its heat flux in aluminum alloy die casting
    Suguru Takeda, Susumu Orii
    Article type: RESEARCH ARTICLE
    2016 Volume 66 Issue 3 Pages 124-129
    Published: March 30, 2016
    Released on J-STAGE: April 30, 2016
    DOIhttps://doi.org/10.2464/jilm.66.124
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Thermal behavior on core-pin of aluminum die-casting related to cooling conditions such as casting volume, core-pin diameter, cooling water pressure are investigated. It is proved that the maximum core-pin surface temperature and heat flux are approximately 820 K and 3.5 MW/m2, which varies depending on the casting conditions. Using thin wall core pin with high pressure cooling water, the maximum surface temperature would not excess solidus temperature which might cause soldering, and heat flux goes up to 7 MW/m2 more than twice compared to the normal core-pin with thick wall. And it is proved that thin wall core-pin is necessary to control the heat flow from the casting to the core pin. In case of thick wall core-pin, rate limiting factor of heat flow will be heat conductivity which is uncontrollable physical property.
    View full abstract
    Download PDF (1018K)
OYAMADA MEMORIAL LECTURE
LECTURE
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top