| Austempering of hot rolled transformation-induced plasticity steels | |
| Alternative Title | Austempering of hot rolled transformation-induced plasticity steels |
| Li Zhuang1; Wu Di2 | |
| 2008 | |
| Source Publication | JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
 |
| ISSN | 1005-8850 |
| Volume | 15Issue:2Pages:143-149 |
| Abstract | Thermomechanical controlled processing (TMCP) was conducted by using a laboratory hot rolling mill. Austempering in the salt bath after hot rolling was investigated. The effect of isothermal holding time on mechanical properties was studied through examining of the microstructure and mechanical properties of the specimens. The mechanism of transformation-induced plasticity (TRIP) was discussed. The results show that the microstructure of these steels consists of polygonal ferrite, granular bainite, and a significant amount of stable retained austenite. Strain-induced transformation to martensite of retained austenite and TRIP occur in the hot rolled Si-Mn TRIP steels. Excellent mechanical properties were obtained for various durations at 400 degrees C. Prolonged holding led to cementite precipitation, which destabilized the austenite. The mechanical properties were optimal when the specimen was held for 25 min, and the tensile strength, total elongation, and strength ductility balance reached the maximum values of 776 MPa, 33%, and 25608 MPa.%, respectively. (c) 2008 University of Science and Technology Beijing. All rights reserved. |
| Other Abstract | Thermomechanical controlled processing (TMCP) was conducted by using a laboratory hot rolling mill. Austempering inAustempering in the salt bath after hot rolling Was investigated. The effect of isothermal holding time on mechanical properties was studied throughing of the microstructure and mechanical properties of the specimens. The mechanism of transformation-induced plasticity (TRIP) was discussed. The results show that the microstructure of these steels consists of polygonal ferrite, granular bainite, and ad TRIP occur in the hot rolled Si-Mn TRIP steels. Excellent mechanical properties were obtained for various durations at 400℃. Prolonged holdingprecipitation, which destabilized the austenite. The mechanical properties were optimal when the specimen was held for 25 min, and the tensile strength, total elongation, and strength ductility balance reached the maximum values of 776 MPa, 33%,respevtively. |
| Keyword | MN TRIP STEELS MECHANICAL-PROPERTIES RETAINED AUSTENITE MICROSTRUCTURE SI DEFORMATION ADDITIONS austempering hot rolling transformation induced plasticity mechanical properties |
| Indexed By | CSCD |
| Language | 英语 |
| CSCD ID | CSCD:3316385 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/156241 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.中国科学院金属研究所 2.东北大学 |
| Recommended Citation GB/T 7714 | Li Zhuang,Wu Di. Austempering of hot rolled transformation-induced plasticity steels[J]. JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING,2008,15(2):143-149. |
| APA | Li Zhuang,&Wu Di.(2008).Austempering of hot rolled transformation-induced plasticity steels.JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING,15(2),143-149. |
| MLA | Li Zhuang,et al."Austempering of hot rolled transformation-induced plasticity steels".JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING 15.2(2008):143-149. |
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