Transactions of Materials and Heat Treatment

Title：Mechanical property and microscopic structure research on die material ZGM2 alloy for isothermal forging

Authors： ZHANG Hui1 ZHANG Chang-ming2 YAO Ze-kun3 FENG Xiao-ming1 GUO Cong-sheng1(1.School of Materials Shanxi College of Technology Hanzhong 723003 China 2.School of Mechanical Engineering Shanxi College of Technology Hanzhong 723003 China 3.School of Materials N

Unit：

KeyWords： superalloys die material mechanical property microscopic structure

ClassificationCode：TG136.1

year,vol(issue):pagenumber：2008,33(1):103-106

Abstract：

The room temperature and high temperature drawing performance of ZGM2 superalloys before and after heat treatment and the endurance were studied.The metallographic was analyzed.The research indicates that ZGM2 alloy before heat treatment has no big change for instantaneous tensile strength from the room temperature to 700℃,but when it is above 700℃, the strength falls down gradually with temperature increasing and its plasticity decreases straightly as the temperature increases because there is more rarefaction in fir-tree crystal.It has a long life up to 680h at 750℃/295MPa and its cast phase has a better creep rupture life at 800℃/245MPa.Fir-tree crystal has a tendency of spheroidization and the branch will be interrupted as the temperature increases.But its high temperature behavior,especially plasticity will fall.So ZGM2 alloy can be used for die material of isothermal forging below 800℃.

Funds：

陕西理工学院科研计划基金资助项目(SLG0602)

Reference：

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