| Phase transformation behavior of Ti49Ni49.5Fe1V0.5 and Ti48Ni48.5Fe1V2.5 alloys after different heat treatments简 |
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| 引用本文： | Yang-Yang Liu,Fu-Shun Liu. Phase transformation behavior of Ti49Ni49.5Fe1V0.5 and Ti48Ni48.5Fe1V2.5 alloys after different heat treatments简[J]. 稀有金属(英文版), 2014, 33(1): 16-20. DOI: 10.1007/s12598-013-0075-4 |
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| 作者姓名： | Yang-Yang Liu Fu-Shun Liu |
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| 基金项目： | Acknowledgments This project was financially supported by the Industry, Education and Research Projects of the China Aviation Industrial （No. cxy2012BH04）. |
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| 摘 要： | The effects of heat treatments on the phase transformation behavior of Ti49 Ni49.5 Fe1 V0.5 and Ti48 Ni48.5 Fe1 V2.5 alloys were investigated. The results indicate that the alloys subjected to different heat treatments have B2 structure at room temperature. All the specimens exhibit a twostage B2→R→B190martensitic transformation on cooling, but a B190→B2 one-stage reverse martensitic transformation on heating except aged A1 alloy, which undergoes an abnormal two-stage transformation upon heating. The phase transformation temperatures are affected by heat treatments and V content, which can be attributed to the variation of the second-phase particles content in the matrix.
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| 关 键 词： | Heat treatments Phase transformation behavior Ti–Ni–Fe–V alloy Second-phase particles |
Phase transformation behavior of Ti49Ni49.5Fe1V0.5 and Ti48Ni48.5Fe1V2.5 alloys after different heat treatments |
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| Yang-Yang Liu,Fu-Shun Liu. Phase transformation behavior of Ti49Ni49.5Fe1V0.5 and Ti48Ni48.5Fe1V2.5 alloys after different heat treatments[J]. Rare Metals, 2014, 33(1): 16-20. DOI: 10.1007/s12598-013-0075-4 |
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| Authors: | Yang-Yang Liu Fu-Shun Liu |
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| Affiliation: | 1. School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing, 100191, China
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| Abstract: | The effects of heat treatments on the phase transformation behavior of Ti49Ni49.5Fe1V0.5 and Ti48Ni48.5Fe1V2.5 alloys were investigated. The results indicate that the alloys subjected to different heat treatments have B2 structure at room temperature. All the specimens exhibit a two-stage B2 → R → B19′ martensitic transformation on cooling, but a B19′ → B2 one-stage reverse martensitic transformation on heating except aged A1 alloy, which undergoes an abnormal two-stage transformation upon heating. The phase transformation temperatures are affected by heat treatments and V content, which can be attributed to the variation of the second-phase particles content in the matrix. |
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| Keywords: | Keywords Heat treatments Phase transformationbehavior Ti-Ni-Fe-V alloy Second-phase particles |
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