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材料工程  2019, Vol. 47 Issue (12): 63-70    DOI: 10.11868/j.issn.1001-4381.2018.001042
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
固溶时效深冷复合处理对ZCuAl10Fe3Mn2合金微观组织和热疲劳性能的影响
赵玲, 刘光磊, 张思源, 李茂军, 刘简宁, 李明辉
江苏大学 材料科学与工程学院, 江苏 镇江 212013
Effect of compound cryogenic treatment on microstructure and thermal fatigue properties of ZCuAl10Fe3Mn2 alloy
ZHAO Ling, LIU Guang-lei, ZHANG Si-yuan, LI Mao-jun, LIU Jian-ning, LI Ming-hui
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
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摘要 研究T6处理、深冷处理和T6+深冷处理对ZCuAl10Fe3Mn2合金微观组织、力学性能以及在室温至450℃下的热疲劳行为。通过XRD,OM,SEM,EDS对合金组织和裂纹形貌进行观察分析。结果表明:T6+深冷复合处理工艺能够显著改善ZCuAl10Fe3Mn2合金的力学性能和微观组织。与T6处理相比,其抗拉强度、硬度以及伸长率分别提高了7.28%,16.96%和23.53%;其α相进一步细化且分布更加均匀,位错密度增加,使得合金整体的组织均匀性、致密性更好。综合性能的提高也有效地提高了合金的热疲劳性能,其抗热应力和氧化腐蚀的能力增强。在相同冷热循环次数下,疲劳裂纹长度最短,裂纹生长速率最慢。
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赵玲
刘光磊
张思源
李茂军
刘简宁
李明辉
关键词 ZCuAl10Fe3Mn2合金T6处理深冷处理热疲劳裂纹生长    
Abstract:The microstructure, mechanical properties and thermal fatigue behavior at room temperature to 450℃ of ZCuAl10Fe3Mn2 alloy treated by T6, cryogenic treatment and T6 + cryogenic treatment were investigated. The microstructure and crack morphology of the alloy were observed and analyzed by XRD, OM, SEM and EDS. The results show that the mechanical properties and microstructure of ZCuAl10Fe3Mn2 alloy can be significantly improved by T6+cryogenic composite treatment. Compared with T6 treatment, the tensile strength, hardness and elongation of the alloy are increased by 7.28%, 16.96% and 23.53%, respectively; the α phase is further refined and distributed more uniformly, the density of dislocation is increased, which make the microstructure uniformity and compactness of the alloy better. The thermal fatigue properties of the alloy are also effectively improved through the improvement of comprehensive properties and the resistance to thermal stress and oxidation corrosion is enhanced. Under the same thermal cycling, the fatigue crack length is the shortest and the crack growth rate is the slowest.
Key wordsZCuAl10Fe3Mn2 alloy    T6 treatment    cryogenic treatment    thermal fatigue    crack growth
收稿日期: 2018-08-29      出版日期: 2019-12-17
中图分类号:  TG146.1  
基金资助: 
通讯作者: 刘光磊(1983-),男,副教授,博士,现从事金属材料的制备及其强韧化研究,联系地址:江苏省镇江市学府路301号江苏大学材料科学与工程学院(212013),E-mail:106409480@qq.com     E-mail: 106409480@qq.com
引用本文:   
赵玲, 刘光磊, 张思源, 李茂军, 刘简宁, 李明辉. 固溶时效深冷复合处理对ZCuAl10Fe3Mn2合金微观组织和热疲劳性能的影响[J]. 材料工程, 2019, 47(12): 63-70.
ZHAO Ling, LIU Guang-lei, ZHANG Si-yuan, LI Mao-jun, LIU Jian-ning, LI Ming-hui. Effect of compound cryogenic treatment on microstructure and thermal fatigue properties of ZCuAl10Fe3Mn2 alloy. Journal of Materials Engineering, 2019, 47(12): 63-70.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2018.001042      或      http://jme.biam.ac.cn/CN/Y2019/V47/I12/63
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