| 许倩倩,张毅,田保红,刘勇,李瑞卿.Cu-Cr-Zr合金热变形行为[J].有色金属材料与工程,2014,35(1):10-14. |
| Cu-Cr-Zr合金热变形行为 |
| Study on Hot Deformation of Cu-Cr-Zr Alloy |
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| DOI： |
| 中文关键词: Cu-Cr-Zr合金 热模拟 流变应力 加工图 |
| 英文关键词:Cu-Cr-Zr alloy thermal simulation flow stress processing figure |
| 基金项目:国家自然科学基金（51101052）；国家高新技术研究发展计划（863计划）资助项目（2006AA03Z528）；河南省高等学校青年骨干教师资助计划（2012GGJS073）；河南省教育厅自然科学研究计划（2011B430013）；河南省有色金属重点实验室基金（2011YSKF12）；河南科技大学人才科研基金项目（09001414）和河南科技大学青年科学基金（2011QN48） |
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| 中文摘要: |
| 在Gleeble-1500D热模拟试验机上，采用高温等温压缩试验，在变形温度650～850℃、应变速率0.001～10 s-1和总压缩应变量50%的条件下，对Cu-Cr-Zr合金的流变应力行为进行研究.通过应力-应变曲线和显微组织图分析了合金在不同应变速率、不同应变温度下的变化规律.结果表明：应变速率和变形温度对合金再结晶影响较大，变形温度越高，合金越容易发生动态再结晶；应变速率越小，合金也同样容易发生动态再结晶，并且对应的峰值应力也越小.从流变应力、应变速率和温度的相关性，得出了该合金热压缩变形时的热变形激活能Q和流变应力方程.研究分析Cu-Cr-Zr合金的热加工性能，可为生产实践提供理论指导与借鉴. |
| 英文摘要: |
| The flow stress behavior of Cu-Cr-Zr alloy during hot compression deformation was studied through making isothermal compression test at Gleeble-1500D thermal-mechanical simulator at the temperature from 650℃ to 850℃,the strain rate from 0.001 s-1 to 10 s-1 and under the maximum strain of 50%.The change of Cu-Cr-Zr alloy was observed under different deformation temperature and different strain rate, through flow stress-strain curve and microstructure graph.Test results show that the higher deformation temperature or the smaller strain rate is,the easier dynamic re-crystallization of the alloy will occur.At the same time, the corresponding peak stress value becomes smaller.Both the hot deformation activation energy Q and constitutive equation can be derived from the correlativity of flow stress,strain rate and temperature of this alloy.The study on Cu-Cr-Zr thermal processing figure can help analyze the thermal performance of Cu-Cr-Zr alloy,and it provides theoretical guidance and reference for production practice. |
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