Enhancement of Strength by Multiple Rolling at Room Temperature in the 1045 Steel Prepared by Aluminothermic Reaction | |
Li, Zhengning; La, Peiqing; Ma, Jiqiang; Guo, Xin; Sheng, Jie; Shi, Yu; Zhou, Xueyuan | |
刊名 | STEEL RESEARCH INTERNATIONAL |
2019-05 | |
卷号 | 90期号:5 |
关键词 | 1045 steel cementite particles mechanical properties microstructure rolling |
ISSN号 | 1611-3683 |
DOI | 10.1002/srin.201800556 |
英文摘要 | The effects of cold rolling on the microstructure and mechanical properties of 1045 steel prepared by aluminothermic reaction casting method are investigated. It is found that an ultrafine-grained ferrite (alpha)+submicron/nano-cementite particle (theta) structure is formed by rolling at room temperature with different thickness reduction. With the increase of thickness reduction, many lamella cementites are squeezed, a portion of cementite is crushed, the dislocation density increases, meanwhile the tensile strength is improved significantly. The underlying mechanisms of enhancing mechanical properties are analyzed, with a focus on the heterogeneous composite structure of a soft fine-grained matrix embedded with hard nano-scale cementite particles. The yield strength and ultimate tensile strength are increased from 256MPa and 490MPa (As-casting) to 939MPa and 956MPa at 84% thickness reduction. The tensile strength of rolled steel with 70% thickness reduction is 1.5 times than common 1045 carbon steel, but it also has a considerable ductility, resulting from the enhancement caused by refined ferrite grains and cementite particles. |
资助项目 | National Natural Science Foundation of China[51561020] |
WOS研究方向 | Metallurgy & Metallurgical Engineering |
语种 | 英语 |
出版者 | WILEY-V C H VERLAG GMBH |
WOS记录号 | WOS:000477083800017 |
状态 | 已发表 |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.223/handle/2XXMBERH/31879] |
专题 | 学科建设与学位办公室 材料科学与工程学院 省部共建有色金属先进加工与再利用国家重点实验室 |
通讯作者 | La, Peiqing |
作者单位 | Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Zhengning,La, Peiqing,Ma, Jiqiang,et al. Enhancement of Strength by Multiple Rolling at Room Temperature in the 1045 Steel Prepared by Aluminothermic Reaction[J]. STEEL RESEARCH INTERNATIONAL,2019,90(5). |
APA | Li, Zhengning.,La, Peiqing.,Ma, Jiqiang.,Guo, Xin.,Sheng, Jie.,...&Zhou, Xueyuan.(2019).Enhancement of Strength by Multiple Rolling at Room Temperature in the 1045 Steel Prepared by Aluminothermic Reaction.STEEL RESEARCH INTERNATIONAL,90(5). |
MLA | Li, Zhengning,et al."Enhancement of Strength by Multiple Rolling at Room Temperature in the 1045 Steel Prepared by Aluminothermic Reaction".STEEL RESEARCH INTERNATIONAL 90.5(2019). |
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