IMECH-IR  > 非线性力学国家重点实验室
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)
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
2018-01-18
Volume712Pages:358-364
ISSN0921-5093
AbstractCold 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.
KeywordCryogenic Toughening Strengthening Gradient Synchrotron high-energy X-ray diffraction
DOI10.1016/j.msea.2017.11.107
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000423892500039
WOS KeywordMETALLIC MATERIALS ; STAINLESS-STEEL ; DEFORMATION ; DUCTILITY ; ALLOY ; DEPENDENCE ; RESISTANCE ; TOUGHNESS ; GLASSES
WOS Research AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS SubjectScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China (NSFC) [11425211, 51231002] ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
Classification一类
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77793
Collection非线性力学国家重点实验室
Affiliation1.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
Recommended Citation
GB/T 7714
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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