Intrinsic impact toughness of relatively high strength alloys
文献类型：期刊论文
| 作者 | 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. |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2018 |
| 卷号 | 142页码:226-235 |
| 关键词 | Specimen Size Fracture-toughness Ductile Brittle Steel Behavior Failure Cu |
| ISSN号 | 1359-6454 |
| 英文摘要 | 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. |
| 学科主题 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 资助机构 | National Natural Science Foundation of China (NSFC) [51331007, U1664253, 51771205] |
| 公开日期 | 2018-06-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79624]  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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