| 制备方法对Ti50.2Ni29.8Cu20合金显微组织和相变行为的影响 |
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| 引用本文： | 石美玉,李琚,吴鹏.制备方法对Ti50.2Ni29.8Cu20合金显微组织和相变行为的影响[J].黑龙江工程学院学报,2012(2):15-18. |
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| 作者姓名： | 石美玉 李琚 吴鹏 |
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| 作者单位： | [1]黑龙江工程学院汽车与交通工程学院,黑龙江哈尔滨150050 [2]东北林业大学机电工程学院,黑龙江哈尔滨150040 [3]哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150001 |
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| 基金项目： | 黑龙江省教育厅科学技术研究项目（11551397） |
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| 摘 要： | 采用常规铸造和快速凝固两种合金制备方法,分别制备出化学成分为Ti50.2Ni29.8Cu20的合金体材料和合金薄带,利用XRD(X射线衍射仪)、TEM(透射电子显微镜)、DSC(差示扫描量热仪)等手段研究这两种制备方法对Ti50.2Ni29.8Cu20合金的马氏体相变行为和显微组织方面的影响。实验结果表明,经500℃退火1h处理后,Ti50.2Ni29.8Cu20合金薄带中出现大量B19马氏体和少量Ti2Ni析出相,而固溶后的Ti50.2Ni29.8Cu20合金体材料只存在B19马氏体,同时相比于体材料,薄带的B19马氏体衍射峰强度减小及B19晶格常数a、b增大,而c减小;Ti50.2Ni29.8Cu20合金薄带的马氏体相变温度Ms比体材料的马氏体相变温度Ms低,且薄带的热滞△T也比体材料小。
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| 关 键 词： | Ti50.2Ni29.8Cu20合金 薄带 体材料 马氏体相变 |
The affection of produce methods on the micro-structure and martensite transformation of the Ti50.2Ni29.8Cu20 shape memory alloys |
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| SHI Mei-yu,LI Jun,WU Peng.The affection of produce methods on the micro-structure and martensite transformation of the Ti50.2Ni29.8Cu20 shape memory alloys[J].Journal of Heilongjiang Institute of Technology,2012(2):15-18. |
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| Authors: | SHI Mei-yu LI Jun WU Peng |
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| Affiliation: | 1. College of Automobile and Traffice Engineering, Heilongjiang Institute of Technology, Harbin 150050, Heilongjiang, Chb na2. College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, Heilongjiang,China; 3. Material Science and Technology Departement, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China) |
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| Abstract: | In this paper the bulk Ti50.2Ni29.8Cu20 alloys and the Ti50.2Ni29.8Cu20 alloy ribbons were fabricated by conventional cast and single--roll melt spinning technique, respectively. The affection of produce meth- ods on the micro-structure and martensite transformation of the bulk Ti50.2Ni29.8Cu20 alloys and the Ti50.2Ni29.8Cu20 Cuzo alloy ribbons was analyzed using XRD （X-ray energy-dispersive spectroscopy system）, TEM （Transmission Electron Microscope）, DSC （differential scanning calorimetry）. The results showed that, there were many B19 martensites and some Ti2Ni precipitates in the Ti50.2Ni29.8Cu20 alloy ribbons annealed at 773K for l h, while there only some B19 martensites were discovered in the bulk Ti50.2Ni29.8Cu20 alloys. Compare to bulk material, the intensity of diffraction peaks of B19 reduced and the lattice constant of B19 martensite a, b decreased and c increased in the ribbons; the Martensite Transformation Temperature （Ms） as well as the transformation hysteresis （AT） of the Ti50.2Ni29.8Cu20 alloy ribbons was below the tempera- ture of the bulk Tiso.Ti50.2Ni29.8Cu20 alloys. |
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| Keywords: | Ti50．2Ni29．8Cu20 alloys Alloy ribbons Bulk alloys Martensite transformation |
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