Effect of Nanopores on Mechanical Properties of the Shape Memory Alloy
Nanoporous Shape Memory Alloys (SMA) are widely used in aerospace, military industry, medical and health and other fields. More and more attention has been paid to its mechanical properties. In particular, when the size of the pores is reduced to the nanometer level, the effect of the surface effect...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/12/5/529 |
| _version_ | 1797535022637383680 |
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| author | Chunzhi Du Zhifan Li Bingfei Liu |
| author_facet | Chunzhi Du Zhifan Li Bingfei Liu |
| author_sort | Chunzhi Du |
| collection | DOAJ |
| description | Nanoporous Shape Memory Alloys (SMA) are widely used in aerospace, military industry, medical and health and other fields. More and more attention has been paid to its mechanical properties. In particular, when the size of the pores is reduced to the nanometer level, the effect of the surface effect of the nanoporous material on the mechanical properties of the SMA will increase sharply, and the residual strain of the SMA material will change with the nanoporosity. In this work, the expression of Young’s modulus of nanopore SMA considering surface effects is first derived, which is a function of nanoporosity and nanopore size. Based on the obtained Young’s modulus, a constitutive model of nanoporous SMA considering residual strain is established. Then, the stress–strain curve of dense SMA based on the new constitutive model is drawn by numerical method. The results are in good agreement with the simulation results in the published literature. Finally, the stress-strain curves of SMA with different nanoporosities are drawn, and it is concluded that the Young’s modulus and strength limit decrease with the increase of nanoporosity. |
| first_indexed | 2024-03-10T11:38:42Z |
| format | Article |
| id | doaj.art-893f46a5ccff498eb1ce10050e47d408 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-10T11:38:42Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-893f46a5ccff498eb1ce10050e47d4082023-11-21T18:40:16ZengMDPI AGMicromachines2072-666X2021-05-0112552910.3390/mi12050529Effect of Nanopores on Mechanical Properties of the Shape Memory AlloyChunzhi Du0Zhifan Li1Bingfei Liu2Aeronautical Engineering College, Civil Aviation University of China, Tianjin 300300, ChinaAeronautical Engineering College, Civil Aviation University of China, Tianjin 300300, ChinaAeronautical Engineering College, Civil Aviation University of China, Tianjin 300300, ChinaNanoporous Shape Memory Alloys (SMA) are widely used in aerospace, military industry, medical and health and other fields. More and more attention has been paid to its mechanical properties. In particular, when the size of the pores is reduced to the nanometer level, the effect of the surface effect of the nanoporous material on the mechanical properties of the SMA will increase sharply, and the residual strain of the SMA material will change with the nanoporosity. In this work, the expression of Young’s modulus of nanopore SMA considering surface effects is first derived, which is a function of nanoporosity and nanopore size. Based on the obtained Young’s modulus, a constitutive model of nanoporous SMA considering residual strain is established. Then, the stress–strain curve of dense SMA based on the new constitutive model is drawn by numerical method. The results are in good agreement with the simulation results in the published literature. Finally, the stress-strain curves of SMA with different nanoporosities are drawn, and it is concluded that the Young’s modulus and strength limit decrease with the increase of nanoporosity.https://www.mdpi.com/2072-666X/12/5/529shape memory alloynanoporessurface effectyoung’s modulusconstitutive model |
| spellingShingle | Chunzhi Du Zhifan Li Bingfei Liu Effect of Nanopores on Mechanical Properties of the Shape Memory Alloy Micromachines shape memory alloy nanopores surface effect young’s modulus constitutive model |
| title | Effect of Nanopores on Mechanical Properties of the Shape Memory Alloy |
| title_full | Effect of Nanopores on Mechanical Properties of the Shape Memory Alloy |
| title_fullStr | Effect of Nanopores on Mechanical Properties of the Shape Memory Alloy |
| title_full_unstemmed | Effect of Nanopores on Mechanical Properties of the Shape Memory Alloy |
| title_short | Effect of Nanopores on Mechanical Properties of the Shape Memory Alloy |
| title_sort | effect of nanopores on mechanical properties of the shape memory alloy |
| topic | shape memory alloy nanopores surface effect young’s modulus constitutive model |
| url | https://www.mdpi.com/2072-666X/12/5/529 |
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