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Cryogenic temperature toughening and strengthening due to gradient phase structure
Ma ZW; Ren Y; Li RG; Wang YD; Zhou LL; Wu XL(武晓雷); Wei YJ(魏宇杰); Gao HJ(高华健)
2018-01-18
发表期刊MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷号712页码:358-364
ISSN0921-5093
摘要Cold embrittlement is one of the primary concerns challenging the usage of steels in infrastructures like pipelines and ocean platforms. This challenge is also compounded by the limited selection of materials for application in a cold and corrosive environment. Inspired by recent progresses in developing gradient structured materials with extraordinary properties, here we report a class of stainless steels with gradient phase structures achieving a superb combination of strength (1753 MPa) and tensile ductility (> 25%) at the cryogenic temperature of 77 K. A set of cylindrical steel samples acquire a graded mixture of hard martensitic and soft austenitic phases through pre-torsion, which results in an optimal stress partition in the material - the hard martensitic structures showing a positive density gradient from core to edge carry higher stress near the edge, while the soft austenitic phase showing a negative density gradient from core to edge serves to retain substantial tensile ductility. The phase transformation at low temperature in gradient structures and the resulted work-hardening could be adopted to enhance the ductility and strength of widely used engineering materials for their applications in harsh environment.
关键词Cryogenic Toughening Strengthening Gradient Synchrotron high-energy X-ray diffraction
DOI10.1016/j.msea.2017.11.107
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收录类别SCI ; EI
语种英语
WOS记录号WOS:000423892500039
关键词[WOS]METALLIC MATERIALS ; STAINLESS-STEEL ; DEFORMATION ; DUCTILITY ; ALLOY ; DEPENDENCE ; RESISTANCE ; TOUGHNESS ; GLASSES
WOS研究方向Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS类目Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
项目资助者National Natural Science Foundation of China (NSFC) [11425211, 51231002] ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
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力学所作者排名1
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77793
专题非线性力学国家重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
2.Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA
3.Univ Sci & Technol, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
4.Brown Univ, Sch Engn, Providence, RI 02912 USA
5.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
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Ma ZW,Ren Y,Li RG,et al. Cryogenic temperature toughening and strengthening due to gradient phase structure[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,712:358-364.
APA Ma ZW.,Ren Y.,Li RG.,Wang YD.,Zhou LL.,...&高华健.(2018).Cryogenic temperature toughening and strengthening due to gradient phase structure.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,712,358-364.
MLA Ma ZW,et al."Cryogenic temperature toughening and strengthening due to gradient phase structure".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 712(2018):358-364.
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