Evolution of Microstructure, Texture, and Mechanical Properties of As-Extruded ND/ZK60 Composite during Hot Compression Deformation
The effects of temperature, strain rate, and strain on the microstructure, texture, and mechanical properties of as-extruded nanodiamond reinforced ZK60 composite during hot compression was systematically studied. The results revealed that the precipitating MgZn<sub>2</sub> and the nanod...
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| Format: | Article |
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MDPI AG
2020-09-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/9/1191 |
| _version_ | 1797554593330102272 |
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| author | Jinhui Wang Shangpeng Li Hongbin Ma |
| author_facet | Jinhui Wang Shangpeng Li Hongbin Ma |
| author_sort | Jinhui Wang |
| collection | DOAJ |
| description | The effects of temperature, strain rate, and strain on the microstructure, texture, and mechanical properties of as-extruded nanodiamond reinforced ZK60 composite during hot compression was systematically studied. The results revealed that the precipitating MgZn<sub>2</sub> and the nanodiamond (ND) particles distributed in the grain interiors hindered the motion of dislocations. The ND particles act as nucleation points and promote the dynamic recrystallization (DRX) of the composites during the hot compression deformation, the flow stress of ND/ZK60 increases with strain rate increases and temperature decreases. {10<inline-formula><math display="inline"><semantics><mover accent="true"><mn>1</mn><mo>¯</mo></mover></semantics></math></inline-formula>2} extension twins are nucleated and grown in the coarse grains as the compressive strain increasing. Meanwhile, the fine grains of DRX generate and present first an increasing then a decreasing trend. The result of Schmid factor and kernel average misorientation indicates that high-density dislocation caused by dislocation climbing and cross slip aggregated in composites with increasing strain. Therefore, the work hardening trend of the composite is strengthened. |
| first_indexed | 2024-03-10T16:34:17Z |
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| id | doaj.art-d4207c1cb58b4c71bb86b100cba69eb0 |
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| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T16:34:17Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-d4207c1cb58b4c71bb86b100cba69eb02023-11-20T12:37:39ZengMDPI AGMetals2075-47012020-09-01109119110.3390/met10091191Evolution of Microstructure, Texture, and Mechanical Properties of As-Extruded ND/ZK60 Composite during Hot Compression DeformationJinhui Wang0Shangpeng Li1Hongbin Ma2Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, ChinaQinghai Sino Titanium Qingduan Equipment Manufacture Ltd. Co., Xining 810016, ChinaQinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, ChinaThe effects of temperature, strain rate, and strain on the microstructure, texture, and mechanical properties of as-extruded nanodiamond reinforced ZK60 composite during hot compression was systematically studied. The results revealed that the precipitating MgZn<sub>2</sub> and the nanodiamond (ND) particles distributed in the grain interiors hindered the motion of dislocations. The ND particles act as nucleation points and promote the dynamic recrystallization (DRX) of the composites during the hot compression deformation, the flow stress of ND/ZK60 increases with strain rate increases and temperature decreases. {10<inline-formula><math display="inline"><semantics><mover accent="true"><mn>1</mn><mo>¯</mo></mover></semantics></math></inline-formula>2} extension twins are nucleated and grown in the coarse grains as the compressive strain increasing. Meanwhile, the fine grains of DRX generate and present first an increasing then a decreasing trend. The result of Schmid factor and kernel average misorientation indicates that high-density dislocation caused by dislocation climbing and cross slip aggregated in composites with increasing strain. Therefore, the work hardening trend of the composite is strengthened.https://www.mdpi.com/2075-4701/10/9/1191nanodiamondhot compression deformationdislocationwork hardening |
| spellingShingle | Jinhui Wang Shangpeng Li Hongbin Ma Evolution of Microstructure, Texture, and Mechanical Properties of As-Extruded ND/ZK60 Composite during Hot Compression Deformation Metals nanodiamond hot compression deformation dislocation work hardening |
| title | Evolution of Microstructure, Texture, and Mechanical Properties of As-Extruded ND/ZK60 Composite during Hot Compression Deformation |
| title_full | Evolution of Microstructure, Texture, and Mechanical Properties of As-Extruded ND/ZK60 Composite during Hot Compression Deformation |
| title_fullStr | Evolution of Microstructure, Texture, and Mechanical Properties of As-Extruded ND/ZK60 Composite during Hot Compression Deformation |
| title_full_unstemmed | Evolution of Microstructure, Texture, and Mechanical Properties of As-Extruded ND/ZK60 Composite during Hot Compression Deformation |
| title_short | Evolution of Microstructure, Texture, and Mechanical Properties of As-Extruded ND/ZK60 Composite during Hot Compression Deformation |
| title_sort | evolution of microstructure texture and mechanical properties of as extruded nd zk60 composite during hot compression deformation |
| topic | nanodiamond hot compression deformation dislocation work hardening |
| url | https://www.mdpi.com/2075-4701/10/9/1191 |
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