| TC21合金的热压缩变形行为及变形机理 |
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| 引用本文： | 周舸,丁桦,曹富荣,赵文娟,侯红亮,李志强. TC21合金的热压缩变形行为及变形机理[J]. 中国有色金属学报, 2011, 0(9) |
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| 作者姓名： | 周舸 丁桦 曹富荣 赵文娟 侯红亮 李志强 |
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| 作者单位： | 东北大学材料与冶金学院;北京航空制造工程研究所; |
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| 基金项目： | 国家安全重大基础研究项目 |
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| 摘 要： | 对TC21合金的热变形行为进行研究,通过对该合金变形过程中应变速率敏感性指数m值、热变形激活能Q、晶粒指数P的计算,得出不同应变速率和温度下m值、Q值和P值的变化规律。在绘制动态DMM模型热加工图的同时构建含位错数量的双相钛合金高温变形机理图。应用热加工图分析TC21合金热变形工艺,确定加工失稳区以及适合加工区域。运用双相钛合金高温变形机理图,根据不同温度下TC21合金柏氏矢量补偿的晶粒尺寸、模量补偿的应力值和位错数量预报该合金的热变形机理。
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| 关 键 词： | TC21合金 变形激活能 应变速率敏感性指数 晶粒指数 加工图 变形机理图 |
Hot compression deformation and deformation mechanisms of TC21 alloy |
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| ZHOU Ge,DING Hua,CAO Fu-rong,ZHAO Wen-juan,HOU Hong-liang,LI Zhi-qiang. Hot compression deformation and deformation mechanisms of TC21 alloy[J]. The Chinese Journal of Nonferrous Metals, 2011, 0(9) |
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| Authors: | ZHOU Ge DING Hua CAO Fu-rong ZHAO Wen-juan HOU Hong-liang LI Zhi-qiang |
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| Affiliation: | ZHOU Ge1,DING Hua1,CAO Fu-rong1,ZHAO Wen-juan1,HOU Hong-liang2,LI Zhi-qiang2 (1.School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China,2.Beijing Aeronautical Manufacturing Technology Research Institute,Beijing 100024,China) |
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| Abstract: | The hot compression deformation of TC21 alloy was investigated.Throngh the calculation of strain rate sensitivity exponent(m),deformation activation energy(Q) and grain size exponent(P) during hot compression deformation,the variations of m,Q and P values at different strain rates and temperatures were obtained.The hot processing map based on the dynamic materials modeling was drawn while the high-temperature deformation mechanism maps incorporating dislocations inside grains were obtained.The processing ma... |
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| Keywords: | TC21 alloy deformation activation energy strain rate sensitivity exponent grain size exponent processing map deformation mechanism map |
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