焼結クロム・ステンレス鋼の強度特性について
1977 年 48 巻 2 号 p. 137-143
詳細
1977 年 48 巻 2 号 p. 137-143
The mechanical properties of sintered ferritic stainless steels were studied powdermetallurgically.
The results were summarized as follows:
(1) The tensile strength got higher with an increase of Cr wholly, while the resultant ductility was better for 18% or less of Cr because of good sinterability.
(2) The tensile strength got higher, without loss of ductility in 2% or less of Si and Mo addition to 12∼18% Cr-regions.
(3) The porosity-sensitive toughness was appreciably improved at higher sintering temperature due to spherodization of residual pores.
(4) External notch (Kt∼4) in tensile test gave the loss of 20% or less to original tensile strength almost independent of porosity.
