Deformation mechanisms for superplastic behaviors in a dual-phase high specific strength steel with ultrafine grains | |
Wang W(王为); Yang MX(杨沐鑫); Yan DS(严定舜); Jiang P(姜萍); Yuan FP(袁福平); Wu XL(武晓雷); Yuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 North 4th Ring,West Rd, Beijing 100190, Peoples R China. | |
发表期刊 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING |
2017-08-15 | |
卷号 | 702页码:133-141 |
ISSN | 0921-5093 |
摘要 | The superplastic behaviors of a high specific strength steel (HSSS) with dual-phase microstructure and ultrafine grains have been investigated under a temperature range of 873-973 K and at a wide strain rate range of 10(-4)-10(-1)/s. The ultrafine grained HSSS exhibits excellent superplastic properties. The microstructure observations at interrupted strains for tests under temperature of 973 K and at strain rate of 10(-3)/s have provided evidences of different mechanisms for two stages. At the first stage (strain range from 0% to 400%), the superplastic flow is attributed to the diffusional transformation from fcc austenite phase to intermetallic compound B2 phase coupled with grain boundary sliding. While intragranular dislocation activities should be the dominant mechanism for the second stage (strain range from 400% to 629%) due to the increased realistic strain rate by diffusive necking. The grain sizes of both phases are observed to be relatively stable and remain always sub micron level during the high temperature tensile deformation, facilitating the superplastic flow. |
关键词 | High Specific Strength Steel Superplasticity Dual-phase Microstructure Ultrafine Grains Grain Boundary Sliding Diffusional Transformation |
DOI | 10.1016/j.msea.2017.07.011 |
URL | 查看原文 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000407983500016 |
关键词[WOS] | LOW-TEMPERATURE SUPERPLASTICITY ; INTERMETALLIC COMPOUND ; STRUCTURAL SUPERPLASTICITY ; TENSILE DEFORMATION ; MAGNESIUM ALLOY ; MICROSTRUCTURE ; TRANSFORMATION ; EVOLUTION ; FE3AL ; FEAL |
WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
项目资助者 | NSFC(11572328 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB22040503) ; 11472286 ; 11672313) |
课题组名称 | LNM材料介观力学性能的表征 |
论文分区 | 一类 |
力学所作者排名 | 1 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/70039 |
专题 | 非线性力学国家重点实验室 |
通讯作者 | Yuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 North 4th Ring,West Rd, Beijing 100190, Peoples R China. |
推荐引用方式 GB/T 7714 | Wang W,Yang MX,Yan DS,et al. Deformation mechanisms for superplastic behaviors in a dual-phase high specific strength steel with ultrafine grains[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2017,702:133-141. |
APA | Wang W.,Yang MX.,Yan DS.,Jiang P.,Yuan FP.,...&Yuan, FP .(2017).Deformation mechanisms for superplastic behaviors in a dual-phase high specific strength steel with ultrafine grains.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,702,133-141. |
MLA | Wang W,et al."Deformation mechanisms for superplastic behaviors in a dual-phase high specific strength steel with ultrafine grains".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 702(2017):133-141. |
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