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《Materials for Mechanical Engineering》 2015-01
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Influences of Vanadium and Copper on Microstructure and High-Temperature Mechanical Properties of 11Cr-2W Low Activation Martensite Steel

YANG Shi-neng;LI Sheng-zhi;SUN Feng;SHAN Ai-dang;School of Materials Science and Engineering,Shanghai Jiaotong University;  
The influences of vanadium contents and 0.22 wt.%Cu on microstructure and tensile and creep properties at 650 ℃ of an 11Cr-2Wlow activation martensite steel were studied.The results show that vanadium contents and 0.22 wt.%Cu had obvious effects on microstructure and the size of M23C6 phase.When the mass fraction of vanadium was 0.105%,MX phase diffusely distributed in the matrix,and now the phase owned the largest number and smallest size.The tensile strength of the tested steel increased from 325.2MPa to 289.4MPa,and the creep-rupture life decreased from 370 hto 251 h when the mass fraction of vanadium increased from0.105 wt.%to 0.203 wt.%.The creep-rupture life of the tested steel could be increased by adding 0.22 wt.%Cu.
【Fund】: 国家自然科学基金资助项目(51034011)
【CateGory Index】: TG142.24
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