Effects of post-weld heat treatment on microstructure and mechanical properties of laser welds in GH3535 superalloy
文献类型：期刊论文
| 作者 | Yu, K; Jiang, ZG; Leng, B; Li, CW; Chen, SJ; Tao, W; Zhou, XT; Li, ZJ |
| 刊名 | OPTICS AND LASER TECHNOLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 81期号:-页码:18—25 |
| 关键词 | MO-CR SUPERALLOY PRECIPITATION CARBIDE C-276 SIZE ZONE |
| ISSN号 | 0030-3992 |
| 通讯作者 | Li, CW ; Li, ZJ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai, Peoples R China. |
| 英文摘要 | In this study, the microstructure and mechanical properties of laser welds before and after post-weld heat treatment processes were studied. The results show that the tensile strength of the joints can be increased by 90 MPa by a post-weld heat treatment process at 871 degrees C for 6 h, exceeding the strength of the original state of the base metal. Besides, elongation of the joints are also increased to 43% by the process, whereas the elongation of as-welded joints are only 22%. In addition, the Charpy impact properties of laser welds almost do not change. Second phase precipitates, which were identified as Mo-Si rich M6C-type carbides by transmission electron diffraction and scanning electron microscope, were observed at solidification grain boundaries and solidification subgrain boundaries. These carbides can pin dislocations during the following tensile deformation, hence are responsible for the strengthening of tensile properties of the joints. (C) 2016 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000373546900004 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/25704]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Yu, K,Jiang, ZG,Leng, B,et al. Effects of post-weld heat treatment on microstructure and mechanical properties of laser welds in GH3535 superalloy[J]. OPTICS AND LASER TECHNOLOGY,2016,81(-):18—25. |
| APA | Yu, K.,Jiang, ZG.,Leng, B.,Li, CW.,Chen, SJ.,...&Li, ZJ.(2016).Effects of post-weld heat treatment on microstructure and mechanical properties of laser welds in GH3535 superalloy.OPTICS AND LASER TECHNOLOGY,81(-),18—25. |
| MLA | Yu, K,et al."Effects of post-weld heat treatment on microstructure and mechanical properties of laser welds in GH3535 superalloy".OPTICS AND LASER TECHNOLOGY 81.-(2016):18—25. |
入库方式： OAI收割
来源：上海应用物理研究所
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