Hot Deformation Behavior and Microstructure Evolution of Cu–Ni–Co–Si Alloys
The Cu-1.7Ni-1.4Co-0.65Si (wt%) alloy is hot compressed by a Gleeble-1500D machine under a temperature range of 760 to 970 °C and a strain rate range of 0.01 to 10 s<sup>−1</sup>. The flow stress increases with the extension of strain rate and decreases with the rising of deformation tem...
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MDPI AG
2020-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/9/2042 |
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doaj-bdeab4f8b30649dc80b754b18abdbfd32020-11-25T03:02:56ZengMDPI AGMaterials1996-19442020-04-01132042204210.3390/ma13092042Hot Deformation Behavior and Microstructure Evolution of Cu–Ni–Co–Si AlloysFeng Liu0Jimiao Ma1Lijun Peng2Guojie Huang3Wenjing Zhang4Haofeng Xie5Xujun Mi6State Key Laboratory of Nonferrous Metals and Processes, GRIMAT Group Co., Ltd., Beijing 100088, ChinaNing Bo XingYe ShengTai Group Co., Ltd., Ningbo 315336, ChinaState Key Laboratory of Nonferrous Metals and Processes, GRIMAT Group Co., Ltd., Beijing 100088, ChinaState Key Laboratory of Nonferrous Metals and Processes, GRIMAT Group Co., Ltd., Beijing 100088, ChinaState Key Laboratory of Nonferrous Metals and Processes, GRIMAT Group Co., Ltd., Beijing 100088, ChinaState Key Laboratory of Nonferrous Metals and Processes, GRIMAT Group Co., Ltd., Beijing 100088, ChinaState Key Laboratory of Nonferrous Metals and Processes, GRIMAT Group Co., Ltd., Beijing 100088, ChinaThe Cu-1.7Ni-1.4Co-0.65Si (wt%) alloy is hot compressed by a Gleeble-1500D machine under a temperature range of 760 to 970 °C and a strain rate range of 0.01 to 10 s<sup>−1</sup>. The flow stress increases with the extension of strain rate and decreases with the rising of deformation temperature. The dynamic recrystallization behavior happens during the hot compression deformation process. The hot deformation activation energy of the alloy can be calculated as 468.5 kJ/mol, and the high temperature deformation constitutive equation is confirmed. The hot processing map of the alloy is established on the basis of hot deformation behavior and hot working characteristics. With the optimal thermal deformation conditions of 940 to 970 °C and 0.01 to 10 s<sup>−1</sup>, the fine equiaxed grain and no holes are found in the matrix, which can provide significant guidance for hot deformation processing technology of Cu–Ni–Co–Si alloy.https://www.mdpi.com/1996-1944/13/9/2042Cu–Ni–Co–Si alloyhot compression deformationconstitutive equationdynamic recrystallizationmicrostructure |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Feng Liu Jimiao Ma Lijun Peng Guojie Huang Wenjing Zhang Haofeng Xie Xujun Mi |
| spellingShingle |
Feng Liu Jimiao Ma Lijun Peng Guojie Huang Wenjing Zhang Haofeng Xie Xujun Mi Hot Deformation Behavior and Microstructure Evolution of Cu–Ni–Co–Si Alloys Materials Cu–Ni–Co–Si alloy hot compression deformation constitutive equation dynamic recrystallization microstructure |
| author_facet |
Feng Liu Jimiao Ma Lijun Peng Guojie Huang Wenjing Zhang Haofeng Xie Xujun Mi |
| author_sort |
Feng Liu |
| title |
Hot Deformation Behavior and Microstructure Evolution of Cu–Ni–Co–Si Alloys |
| title_short |
Hot Deformation Behavior and Microstructure Evolution of Cu–Ni–Co–Si Alloys |
| title_full |
Hot Deformation Behavior and Microstructure Evolution of Cu–Ni–Co–Si Alloys |
| title_fullStr |
Hot Deformation Behavior and Microstructure Evolution of Cu–Ni–Co–Si Alloys |
| title_full_unstemmed |
Hot Deformation Behavior and Microstructure Evolution of Cu–Ni–Co–Si Alloys |
| title_sort |
hot deformation behavior and microstructure evolution of cu–ni–co–si alloys |
| publisher |
MDPI AG |
| series |
Materials |
| issn |
1996-1944 |
| publishDate |
2020-04-01 |
| description |
The Cu-1.7Ni-1.4Co-0.65Si (wt%) alloy is hot compressed by a Gleeble-1500D machine under a temperature range of 760 to 970 °C and a strain rate range of 0.01 to 10 s<sup>−1</sup>. The flow stress increases with the extension of strain rate and decreases with the rising of deformation temperature. The dynamic recrystallization behavior happens during the hot compression deformation process. The hot deformation activation energy of the alloy can be calculated as 468.5 kJ/mol, and the high temperature deformation constitutive equation is confirmed. The hot processing map of the alloy is established on the basis of hot deformation behavior and hot working characteristics. With the optimal thermal deformation conditions of 940 to 970 °C and 0.01 to 10 s<sup>−1</sup>, the fine equiaxed grain and no holes are found in the matrix, which can provide significant guidance for hot deformation processing technology of Cu–Ni–Co–Si alloy. |
| topic |
Cu–Ni–Co–Si alloy hot compression deformation constitutive equation dynamic recrystallization microstructure |
| url |
https://www.mdpi.com/1996-1944/13/9/2042 |
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1724687593414590464 |