Selective laser melting manufactured CNTs/AZ31B composites: Heat transfer and vaporized porosity evolution
文献类型：期刊论文
| 作者 | Wu, Jiaojiao ; Wang, Linzhi1
|
| 刊名 | JOURNAL OF MATERIALS RESEARCH
 |
| 出版日期 | 2018-09-28 |
| 卷号 | 33期号:18页码:2752-2762 |
| ISSN号 | 0884-2914 |
| 关键词 | composite laser Mg |
| DOI | 10.1557/jmr.2018.224 |
| 英文摘要 | In this research, heat transfer analysis was operated by simulation to investigate the influence of carbon nanotubes (CNTs) on laser absorption and molten pool characteristic as well as the vaporization porosity of a typical magnesium alloy of AZ31B in the selective laser melting (SLM) process. It is concluded that the laser absorption is enhanced by 7.9% through mixing 1.5 wt% CNTs into AZ31B alloy powders. The full melting state of molten pools for CNTs/AZ31B composites was achieved by laser input energy densities (LIEDs) larger than 42 J/mm(3). However, vaporization porosity has an ascendent tendency with LIED increasing, which leads to poor densities of manufactured parts. As a result, the optimal relative density and mechanical properties of composites are obtained by an LIED of 42 J/mm(3). It may solve the problem of low laser absorption in laser processing for magnesium alloys and provide a referenced method to evaluate the vaporization porosity of the material in the SLM process. |
| 资助项目 | National Natural Science Foundation of China[51405467] ; Youth Innovation Promotion Association CAS |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | CAMBRIDGE UNIV PRESS |
| WOS记录号 | WOS:000446676400011 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/6825]  |
| 专题 | 机器人与3D打印技术创新中心 |
| 通讯作者 | Wang, Linzhi |
| 作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.Chongqing Key Lab Addit Mfg Technol & Syst, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Jiaojiao,Wang, Linzhi. Selective laser melting manufactured CNTs/AZ31B composites: Heat transfer and vaporized porosity evolution[J]. JOURNAL OF MATERIALS RESEARCH,2018,33(18):2752-2762. |
| APA | Wu, Jiaojiao,&Wang, Linzhi.(2018).Selective laser melting manufactured CNTs/AZ31B composites: Heat transfer and vaporized porosity evolution.JOURNAL OF MATERIALS RESEARCH,33(18),2752-2762. |
| MLA | Wu, Jiaojiao,et al."Selective laser melting manufactured CNTs/AZ31B composites: Heat transfer and vaporized porosity evolution".JOURNAL OF MATERIALS RESEARCH 33.18(2018):2752-2762. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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