Enhancement of the strength-toughness balance in a quenched laser-additively-manufactured low alloy mild steel: Effect of grain refinement and nanotwin bundle formation
文献类型：期刊论文
| 作者 | Zhang, W.1,2,3; Dong, Z. H.3; Shang, X.1; Chen, S. G.1,4; Zhang, L. J.1; Peng, X.5 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2023-01-18 |
| 卷号 | 862页码:9 |
| 关键词 | Laser melting deposition Lath martensite Nanotwin bundle Mechanical property Low alloy mild steel |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2022.144488 |
| 通讯作者 | Peng, X.(xpeng@nchu.edu.cn) |
| 英文摘要 | A laser additively manufactured (LAM) ferrite-austenite low-alloy mild 12CrNi2 has a low ultimate tensile strength but a larger elongation. To improve the strength but without compromising the toughness, a concept to martensitize the low alloy mild steel with introducing nanotwin bundles into the martensitic laths is proposed, through deliberately-designed cyclic quenching (CQ). It is found that the prior austenitic grain refinement helps to form a fine-grained martensite (alpha ' ) constituted of the laths with the formation of {112}<111> type nanotwin bundles. The steel with such a nanotwinned martensite structure, in comparison to the steel counterpart with a dislocated lath martensitic structure obtained through conventional direct quenching (DQ), is enhanced not only in ultimate tensile strength, but also in elongation. The mechanism for the nanotwin bundles formation is interpreted in connection with the grain-refinement-induced decrease in martensitic transformation starting temperature (Ms). |
| 资助项目 | Guang Dong major Project of Basic and Applied Basic Research Foundation ; National Key Research and Development of China ; Key-Area Research and Development Program of Guangdong Province ; Dongguan Sci-tech Commissoner ; [2020B030103001] ; [2016YFB1100203] ; [2020B090924002] ; [20211800500102] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000904312300002 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | Guang Dong major Project of Basic and Applied Basic Research Foundation ; National Key Research and Development of China ; Key-Area Research and Development Program of Guangdong Province ; Dongguan Sci-tech Commissoner |
| 源URL | [http://ir.imr.ac.cn/handle/321006/175756]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Peng, X. |
| 作者单位 | 1.Dong Guan Univ Technol, Inst Sci &Technol Innovat, Dong Guan 523000, Peoples R China 2.Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Liaoning, Peoples R China 4.Guangzhou Panyu Polytech, Sch Art & Design, Guangzhou 511483, Peoples R China 5.Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Jiangxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, W.,Dong, Z. H.,Shang, X.,et al. Enhancement of the strength-toughness balance in a quenched laser-additively-manufactured low alloy mild steel: Effect of grain refinement and nanotwin bundle formation[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,862:9. |
| APA | Zhang, W.,Dong, Z. H.,Shang, X.,Chen, S. G.,Zhang, L. J.,&Peng, X..(2023).Enhancement of the strength-toughness balance in a quenched laser-additively-manufactured low alloy mild steel: Effect of grain refinement and nanotwin bundle formation.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,862,9. |
| MLA | Zhang, W.,et al."Enhancement of the strength-toughness balance in a quenched laser-additively-manufactured low alloy mild steel: Effect of grain refinement and nanotwin bundle formation".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 862(2023):9. |
入库方式： OAI收割
来源：金属研究所
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