Effect of Grain Refinement on Deformation Mechanism and Mechanical Properties of Austenitic Stainless Steel
The concept of phase reversion involving cold deformation of metastable austenite to generate strain-induced martensite, followed by temperature-time annealing sequence, was used to obtain grain size of nanograined/ultrafine-grained and coarse-grained austenitic stainless steels. The mechanical prop...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2016-08-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.08.005 |
| _version_ | 1797966251316740096 |
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| author | WAN Xiang-liang LI Guang-qiang ZHOU Bo-wen MA Jiang-hua |
| author_facet | WAN Xiang-liang LI Guang-qiang ZHOU Bo-wen MA Jiang-hua |
| author_sort | WAN Xiang-liang |
| collection | DOAJ |
| description | The concept of phase reversion involving cold deformation of metastable austenite to generate strain-induced martensite, followed by temperature-time annealing sequence, was used to obtain grain size of nanograined/ultrafine-grained and coarse-grained austenitic stainless steels. The mechanical properties of austenitic stainless steels with different grain sizes were obtained by tensile testing, the deformation microstructure and fracture surface were analyzed by TEM and SEM observations, respectively. The results indicate that deformation twins contribute to excellent ductility in high yield strength nanograined/ultrafine-grained steel, while in the low yield strength coarse-grained steel, the high ductility is due to strain-induced martensite transformation. Interestingly, the tensile fracture of the two austensite stainless steels with different deformation mechanism is ductile fracture. The deformation mechanism from deformation twins to strain-induced martensite in the coarse-grained structure in nanograined/ultrafine-grained structures is owing to the increased stability of austenite with grain refining. |
| first_indexed | 2024-04-11T02:12:48Z |
| format | Article |
| id | doaj.art-5a04e567290e41ffb64f6e10844f5970 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:12:48Z |
| publishDate | 2016-08-01 |
| publisher | Journal of Materials Engineering |
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| series | Cailiao gongcheng |
| spelling | doaj.art-5a04e567290e41ffb64f6e10844f59702023-01-03T01:48:58ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812016-08-01448293310.11868/j.issn.1001-4381.2016.08.00520160805Effect of Grain Refinement on Deformation Mechanism and Mechanical Properties of Austenitic Stainless SteelWAN Xiang-liang0LI Guang-qiang1ZHOU Bo-wen2MA Jiang-hua3Key Laboratory for Ferrous Metallurgy and Resources Utilization(Ministry of Education), Wuhan University of Science and Technology, Wuhan 430081, ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan 430081, ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan 430081, ChinaKey Laboratory for Ferrous Metallurgy and Resources Utilization(Ministry of Education), Wuhan University of Science and Technology, Wuhan 430081, ChinaThe concept of phase reversion involving cold deformation of metastable austenite to generate strain-induced martensite, followed by temperature-time annealing sequence, was used to obtain grain size of nanograined/ultrafine-grained and coarse-grained austenitic stainless steels. The mechanical properties of austenitic stainless steels with different grain sizes were obtained by tensile testing, the deformation microstructure and fracture surface were analyzed by TEM and SEM observations, respectively. The results indicate that deformation twins contribute to excellent ductility in high yield strength nanograined/ultrafine-grained steel, while in the low yield strength coarse-grained steel, the high ductility is due to strain-induced martensite transformation. Interestingly, the tensile fracture of the two austensite stainless steels with different deformation mechanism is ductile fracture. The deformation mechanism from deformation twins to strain-induced martensite in the coarse-grained structure in nanograined/ultrafine-grained structures is owing to the increased stability of austenite with grain refining.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.08.005austenitic stainless steelgrain refinementdeformation mechanismmechanical propertyaus-tenite stability |
| spellingShingle | WAN Xiang-liang LI Guang-qiang ZHOU Bo-wen MA Jiang-hua Effect of Grain Refinement on Deformation Mechanism and Mechanical Properties of Austenitic Stainless Steel Cailiao gongcheng austenitic stainless steel grain refinement deformation mechanism mechanical property aus-tenite stability |
| title | Effect of Grain Refinement on Deformation Mechanism and Mechanical Properties of Austenitic Stainless Steel |
| title_full | Effect of Grain Refinement on Deformation Mechanism and Mechanical Properties of Austenitic Stainless Steel |
| title_fullStr | Effect of Grain Refinement on Deformation Mechanism and Mechanical Properties of Austenitic Stainless Steel |
| title_full_unstemmed | Effect of Grain Refinement on Deformation Mechanism and Mechanical Properties of Austenitic Stainless Steel |
| title_short | Effect of Grain Refinement on Deformation Mechanism and Mechanical Properties of Austenitic Stainless Steel |
| title_sort | effect of grain refinement on deformation mechanism and mechanical properties of austenitic stainless steel |
| topic | austenitic stainless steel grain refinement deformation mechanism mechanical property aus-tenite stability |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.08.005 |
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