Transactions of Materials and Heat Treatment

Title：Research on mechanical property and microscopic structure of GH4169 alloy for isothermal forging

Authors： ZHANG Hui1 ZHANG Chang-ming2 YAO Ze-kun3 GUO Cong-sheng1 FENG Xiao-ming1(1.School of Material Shaanxi University of Technology Hanzhong 723003 China 2.School of Mechanical Engineering Shaanxi University of Technology Hanzhong 723003 China 3.School of Mate

Unit：

KeyWords： GH4169 alloy isothermal forging microstructure and property

ClassificationCode：TG319

year,vol(issue):pagenumber：2008,33(5):116-119

Abstract：

Through the tensile at room and high temperature as well as the high temperature endurance,the mechanics performance test,the microstructure research and the fracture appearance analysis of the deformation GH4169 alloy were carried on.The crystal grain of GH4169 alloy,the carbide,the δ phase and the mixture all increased along with the temperature raised.Over 750 ℃,the acicular carbide coarsened slightly,and tended to getting together;the tensile strength σb and yield strength σ0.2 dropped along with the temperature raised;the elongation percentage δ and contraction of cross section area ψ dropped first along with the temperature and raised rapidly after 750 ℃.The deformed GH4169 alloy under the intermediate temperature had high strength and good plasticity.It can be used as the isothermal forging mold material below 800 ℃.

Funds：

陕西理工学院科研项目资助(SLG06002)

Reference：

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