S对Hastelloy C-4合金凝固偏析及热塑性的影响  

Effects of S on Solidification Segregation and Hot Plasticity of Hastelloy C-4 Alloy

作　　者：李小波[1] 

机构地区：[1]湘潭大学

出　　处：《特种铸造及有色合金》2003年第6期24-25,共2页Special Casting & Nonferrous Alloys

摘　　要：采用金相探针法和高温拉伸试验研究S对HastelloyC 4合金凝固偏析及热塑性的影响。结果表明 ,随着S含量的增加 ,导致固液两相区、温度范围和偏析程度明显加大 ,引起合金的热塑性降低。因此 ,降低合金S的偏析有利于合金的锻造性能。Effects of S on solidification segregation and hot plasticity of Hastelloy C 4 alloy were examined by electron probe and hot tensile test. The results showed that the solid liquid phase zone, temperature interval and segregation degree may be obviously enlarged with increasing S content so as to reduce the hot plasticity of the alloy. Therefore, the decrease in S content in the alloy is beneficial to the forging performance of the alloy.

关 键 词：SHasteHoyC-4合金 凝固偏析 热塑性 

分 类 号：TG111.4[金属学及工艺—物理冶金]