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Intrinsic impact toughness of relatively high strength alloys
Duan, QQ; Qu, RT; Zhang, P; Zhang, ZJ; Zhang, ZF; Zhang, ZF (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
2018
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume142Pages:226-235
AbstractAlthough the Charpy impact test has been routine for decades to assess the ductile or brittle nature of materials, the impact toughness, which is strongly sample-thickness dependent, is not an intrinsic property. By re-examining the energy absorption during fracturing of relatively high strength alloys, here we find a remarkably good linear relation between the impact energies and the fracture surface areas of samples with different thickness, and the slope essentially renders the intrinsic impact toughness. The new findings, which also provide a scaling law to well predict the thickness effect on the traditional impact toughness, may have broad applications for precisely determining the ductile-to-brittle transition temperature of small-dimensional devices, selecting materials according to their toughness at the thickness in usage, and evaluating the intrinsic toughness of emerging high strength materials with limited achievable size. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.; Although the Charpy impact test has been routine for decades to assess the ductile or brittle nature of materials, the impact toughness, which is strongly sample-thickness dependent, is not an intrinsic property. By re-examining the energy absorption during fracturing of relatively high strength alloys, here we find a remarkably good linear relation between the impact energies and the fracture surface areas of samples with different thickness, and the slope essentially renders the intrinsic impact toughness. The new findings, which also provide a scaling law to well predict the thickness effect on the traditional impact toughness, may have broad applications for precisely determining the ductile-to-brittle transition temperature of small-dimensional devices, selecting materials according to their toughness at the thickness in usage, and evaluating the intrinsic toughness of emerging high strength materials with limited achievable size. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
description.department[duan, q. q. ; qu, r. t. ; zhang, p. ; zhang, z. j. ; zhang, z. f.] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [duan, q. q. ; zhang, z. f.] univ chinese acad sci, 19a yuquan rd, beijing 100049, peoples r china
KeywordSpecimen Size Fracture-toughness Ductile Brittle Steel Behavior Failure Cu
Subject AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China (NSFC) [51331007, U1664253, 51771205]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79624
Collection中国科学院金属研究所
Corresponding AuthorQu, RT; Zhang, ZF (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Duan, QQ,Qu, RT,Zhang, P,et al. Intrinsic impact toughness of relatively high strength alloys[J]. ACTA MATERIALIA,2018,142:226-235.
APA Duan, QQ,Qu, RT,Zhang, P,Zhang, ZJ,Zhang, ZF,&Zhang, ZF .(2018).Intrinsic impact toughness of relatively high strength alloys.ACTA MATERIALIA,142,226-235.
MLA Duan, QQ,et al."Intrinsic impact toughness of relatively high strength alloys".ACTA MATERIALIA 142(2018):226-235.
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