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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
发表期刊ACTA MATERIALIA
ISSN1359-6454
卷号142页码:226-235
摘要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.; 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.
部门归属[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
关键词Specimen Size Fracture-toughness Ductile Brittle Steel Behavior Failure Cu
学科领域Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者National Natural Science Foundation of China (NSFC) [51331007, U1664253, 51771205]
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/79624
专题中国科学院金属研究所
通讯作者Qu, 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.
推荐引用方式
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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