| 张真,周子健,许言午,李登云,姚力,周峰,朱凯,徐韬,章江铭,梁家雄,蒲天宇,陈正坤,魏海根.Cu-11.7%Mn-1.3%Ni合金热变形行为[J].有色金属材料与工程,2025,46(1):83-89. |
| Cu-11.7%Mn-1.3%Ni合金热变形行为 |
| Hot deformation behavior of Cu-11.7%Mn-1.3%Ni alloy |
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| DOI：10.13258/j.cnki.nmme.20240508001 |
| 中文关键词: Cu-11.7%Mn-1.3%Ni合金 真应力–真应变曲线 本构方程 维氏硬度 显微组织 |
| 英文关键词:Cu-11.7%Mn-1.3%Ni alloy true stress-true strain curve constitutive equation Vickers hardness microstructure |
| 基金项目:国家电网有限公司科技项目（5700-202219210A-1-1-ZN） |
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| 摘要点击次数: 11 |
| 全文下载次数: 30 |
| 中文摘要: |
| 实验采用的材料为热轧态Cu-11.7%Mn-1.3%Ni合金，热压缩变形量为60%，应变速率分别为1.000、0.100、0.010、0.001 s?1，变形温度为300、500、570、640、700 ℃。探究变形温度以及应变速率对Cu-11.7%Mn-1.3%Ni合金流变行为及维氏硬度的影响。结果表明：变形温度在500和570 ℃下其晶粒出现明显的压缩变形，且大部分晶粒较为破碎，可以看出组织发生了明显的变形；随着温度升高至640和700 ℃，其晶粒逐渐长大，大小均匀，出现了大量的退火孪晶；随着温度的升高，Cu-11.7%Mn-1.3%Ni合金的维氏硬度降低；随着应变速率的增大，Cu-11.7%Mn-1.3%Ni合金的维氏硬度增高；应变速率为1.000 s?1时，Cu-11.7%Mn-1.3%Ni合金的维氏硬度最高。 |
| 英文摘要: |
| The material used in the experiment is hot rolled Cu-11.7%Mn-1.3%Ni alloy, the hot compression deformation is 60%, the strain rates are 1.000, 0.100, 0.010, 0.001 s?1, and the deformation temperatures are 300, 500, 570, 640, 700 ℃. The effects of deformation temperature and strain rate on the rheological behavior and Vickers hardness of Cu-11.7%Mn-1.3%Ni alloy were investigated. The results indicated that the grains exhibts noticeable compression deformation at deformation temperature of 500 and 570 ℃, and most of the grains are broken, which shows that the microstructure was obviously deformed. As the emperature rises to 640 and 700 ℃, the grains grow up gradually, the grain size is uniform, and a large number of annealing twins appear. The Vickers hardness of the Cu-11.7%Mn-1.3%Ni alloy decreases with the increase of temperature, while it increases with the increase of strain rates. When the strain rate is 1.000 s?1, the Vickers hardness of Cu-11.7%Mn-1.3%Ni alloy is the highest. |
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