Effect of cladding parameters on microstructure and defects in direct laser metal deposition of 24CrNiMo steel
文献类型：期刊论文
| 作者 | Ebrahimnia, Mohamad2; Xie, Yujiang2; Chi, Changtai1 |
| 刊名 | JOURNAL OF LASER APPLICATIONS
 |
| 出版日期 | 2021-02-01 |
| 卷号 | 33期号:1页码:12 |
| 关键词 | direct metal deposition laser cladding crack low alloy steel |
| ISSN号 | 1042-346X |
| DOI | 10.2351/7.0000214 |
| 通讯作者 | Xie, Yujiang(Yjxie@imr.ac.cn) |
| 英文摘要 | Direct laser metal deposition of a medium carbon low alloy steel was performed on a round bar sample. Taguchi design was used to investigate the effect of three process parameters with three different levels on the microstructure and properties of single- and multitrack clad samples. Microstructural analysis showed that coalesced bainite and lath martensite exist in the clad area. Two different kinds of cracks occurred in multitrack clad samples. When laser power is not sufficient or scanning speed is high, cracks can occur in the laser clad area because of the accumulation of trapped defects inside the molten pool, e.g., inclusions, voids, and low melting point constituents alongside insufficient molten metal back-filling at interdendritic regions. These cracks can be considered as solidification cracks. Another type of cracks can occur in previous tracks of multitrack clads which actually are the heat affected zones (HAZ) of newly deposited clad tracks, because of high tensile stress on HAZ and the presence of oxide and sulfide constituents at interdendritic regions. These cracks can be considered as reheating cracks. According to the result of Taguchi design experiments, using optimum laser parameters like high laser power, medium scanning speed, and sufficient powder feed rate, crackfree clad layers can be obtained via the prevention of formation of unfavorable constituents at interdendritic regions. |
| 资助项目 | National Key Research and Development Program of China[2016YFB1100203] |
| WOS研究方向 | Materials Science ; Optics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000600227600002 |
| 出版者 | AMER INST PHYSICS |
| 资助机构 | National Key Research and Development Program of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/158770]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Xie, Yujiang |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Zhejiang Handsome Intelligent Remfg Technol Co Lt, Jiaxing 314000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ebrahimnia, Mohamad,Xie, Yujiang,Chi, Changtai. Effect of cladding parameters on microstructure and defects in direct laser metal deposition of 24CrNiMo steel[J]. JOURNAL OF LASER APPLICATIONS,2021,33(1):12. |
| APA | Ebrahimnia, Mohamad,Xie, Yujiang,&Chi, Changtai.(2021).Effect of cladding parameters on microstructure and defects in direct laser metal deposition of 24CrNiMo steel.JOURNAL OF LASER APPLICATIONS,33(1),12. |
| MLA | Ebrahimnia, Mohamad,et al."Effect of cladding parameters on microstructure and defects in direct laser metal deposition of 24CrNiMo steel".JOURNAL OF LASER APPLICATIONS 33.1(2021):12. |
入库方式： OAI收割
来源：金属研究所
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