合金元素对奥氏体热模具钢时效硬化及力学性能的影响  

EFFECTS OF ALLOY ELEMENTS ON PRECIPITATION HARDENING CHARACTERISTICS AND MECHANICAL PROPERTIES OF AUSTENITIC HOT DIE STEEL

作　　者：谢长生[1] 崔崑[1] 

机构地区：[1]华中理工大学

出　　处：《钢铁》1992年第2期49-53,58,共6页Iron and Steel

摘　　要：本文对Fe-Ni-Mn-Cr奥氏体热模具钢的时效硬化特性及力学性能进行了探讨。结果表明:在钢中加入少量的铌元素后,在相同的热处理工艺条件下,将使试验钢的最大时效硬度值减小。增加钢中Mn/Ni比可以提高最大时效硬度值。The precipitation hardening characteristics and mechanical properties of Fe-Ni-Mn-Cr austenitic hot die steel have been investigated. The results show that by adding Nb into the tested steel, the maximum precipitation hardness is decreased under the same heat treatment condition. The maximum precipitation hardness should be increased with increasing Mn/Ni ratio in the steel, meanwhile the ductility at room and elevated temperatures are decreased.

关 键 词：合金元素 模具钢 时效硬化 

分 类 号：TG142.13[一般工业技术—材料科学与工程]