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《Journal of Functional Materials》 2015-19
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Microalloying effect on microstructure and mechanical properties of Ti based amorphous composites

ZHAO Yanchun;ZHAO Zhiping;YUAN Xiaopeng;KOU Shengzhong;LI Chunyan;LUO Wentao;State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals,Lanzhou University of Technology;Wenzhou Research Institute of Pump and Valve Engineering,Lanzhou University of Technology;  
In this paper,a sery of(Ti0.5Ni0.5-xZrx)80Cu20(x=0,0.02,0.04,0.06,0.08)was successfully achieved in the levitation melting and water-cooling copper suction.We have prepared amorphous composite materials with continuous organization gradient through the control of Zr addition amount and studyed its structure and mechanical behavior and influence of trace of Zr adding to structure and mechanical behavior of amorphous composite materials.The results show that the temperature gradient of solidification process determines the temperature gradient of composite materials,from surface to center mainly for the amorphous phase,martensite phase and austenitic dendrites.It has precipitated the B2-Ti(Ni,Cu)supercooled austenite phase and the B19'-Ti(Ni,Cu)thermal induced martensite phase on as-cast amorphous substrate.Stress induced martensite phase transformated after adding loads.Diffraction peak of martensite gets stonger than when it was as-cast and martensite prefers orientation.This series amorphous alloy's amorphous formation ability reduces after increaseing firstly and austenite's contents was declining and transformation induced plasticity decreases,so the plastic was getting low and the intensity reduces after increaseing firstly.
【Fund】: 高等学校博士学科点专项科研基金资助项目(20116201120003);; 浙江省自然科学基金资助项目(LQ13E010002);; 甘肃省高等学校科研资助项目(2013A-040);; 兰州市科技发展计划资助项目(2014-2-9);; 兰州理工大学红柳青年教师培养计划资助项目(Q201406)
【CateGory Index】: TB33
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