| Microstructures and mechanical properties of Si-Al-Mn TRIP steel with niobium | |
| Alternative Title | Microstructures and Mechanical Properties of Si-Al-Mn TRIP Steel with Niobium |
| Tang Zhengyou; Ding Hua; Du Linxiu; Li Long | |
| 2007 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 23Issue:6Pages:790-794 |
| Abstract | Microstructure consisting of ferrite, bainite and retained austenite can be obtained through intercritical annealing and isothermal treatment in bainite transformation region for low silicon TRIP (transformation induced plasticity) steel containing niobium. Effects of strain rate, Nb content and soaking temperature in bainite region on microstructure and mechanical properties of test steels were investigated. It is shown that as strain rate ranges from 10(-2) to 10(-4) s(-1), the volume fraction of transformed martensite from retained austenite, as well as tensile strength, elongation rate and strength-ductility product, increases. When Nb is added, the volume fraction of retained austenite decreases, but tensile strength and yield strength increase. While Nb content reaches 0.014%, the steel exhibits high elongation and combination of strength and ductility. Higher retained austenite volume fraction and good mechanical properties are obtained in the test steels when the soaking temperature in bainite region is 400 degrees C. The maximum values of tensile strength, total elongation rate and strength-ductility product can reach 739 MPa, 38% and 28082 MPa%, respectively. |
| Other Abstract | Microstructure consisting of ferrite, bainite and retained austenite can be obtained through intercritical annealing and isothermal treatment in bainite transformation region for low silicon TRIP (transformation induced plasticity) steel containing niobium. Effects of strain rate, Nb content and soaking temperature in bainite region on microstructure and mechanical properties of test steels were investigated. It is shown that as strain rate ranges from 10-2 to 10-4 s-1, the volume fraction of transformed martensite from retained austenite,as well as tensile strength, elongation rate and strength-ductility product, increases. When Nb is added, the volume fraction of retained austenite decreases, but tensile strength and yield strength increase. While Nb content reaches 0.014%, the steel exhibits high elongation and combination of strength and ductility. Higher retained austenite volume fraction and good mechanical properties are obtained in the test steels when the soaking temperature in bainite region is 400℃. The maximum values of tensile strength, total elongation rate and strength-ductility product can reach 739 MPa, 38% and 28082 MPa%, respectively. |
| Keyword | TRANSFORMATION-INDUCED PLASTICITY DUAL-PHASE STEEL RETAINED AUSTENITE ALLOYING ELEMENTS SHEET DEFORMATION FORMABILITY DUCTILITY TRIP strain rate niobium content retained austenite mechanical properties |
| Indexed By | CSCD |
| Language | 英语 |
| CSCD ID | CSCD:3192741 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/151284 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Tang Zhengyou,Ding Hua,Du Linxiu,et al. Microstructures and mechanical properties of Si-Al-Mn TRIP steel with niobium[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2007,23(6):790-794. |
| APA | Tang Zhengyou,Ding Hua,Du Linxiu,&Li Long.(2007).Microstructures and mechanical properties of Si-Al-Mn TRIP steel with niobium.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,23(6),790-794. |
| MLA | Tang Zhengyou,et al."Microstructures and mechanical properties of Si-Al-Mn TRIP steel with niobium".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 23.6(2007):790-794. |
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