Microstructure and mechanical properties of a new cast nickel-based superalloy K4750 joint produced by gas tungsten arc welding process
文献类型：期刊论文
| 作者 | Xie, Jilin1,2; Ma, Yingche2; Xing, Weiwei2; Ou, Meiqiong2; Zhang, Long2; Liu, Kui2 |
| 刊名 | JOURNAL OF MATERIALS SCIENCE
 |
| 出版日期 | 2019-02-01 |
| 卷号 | 54期号:4页码:3558-3571 |
| ISSN号 | 0022-2461 |
| DOI | 10.1007/s10853-018-3081-y |
| 通讯作者 | Ma, Yingche() ; Liu, Kui(kliu@imr.ac.cn) |
| 英文摘要 | The microstructures and mechanical properties of gas tungsten arc-welded joints of superalloy K4750 that has been newly developed were examined. The microsegregation pattern during solidification of the fusion zone indicated that Fe was prone to segregate into the dendritic core, while Nb, Mo, Ti, W and Si were rejected into the dendritic boundary. The phase transformation sequence of the K4750 alloy fusion zone was LL+L+ +(Ti,Nb)C+(Ti,Nb)C. Heat-affected zone (HAZ) examination shows it consisted of partially melted zone with liquated MC carbides and liquated grain boundaries. Cracking-free HAZ microstructure suggested that K4750 alloy possess excellent HAZ cracking resistance properties. Relatively low concentration of Al and Ti results in the excellent cracking resistance properties of the alloy. Vickers microhardness of as-welded joint is lower than that of post-weld heat treatment (PWHT) joint across the whole joint due to the absence of 50nm spherical particles formed during PWHT. Tensile properties of as-welded joints are comparable to PWHT joints in terms of the ultimate tensile strength and elongation. |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000452502500063 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/130750]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Ma, Yingche; Liu, Kui |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, Jilin,Ma, Yingche,Xing, Weiwei,et al. Microstructure and mechanical properties of a new cast nickel-based superalloy K4750 joint produced by gas tungsten arc welding process[J]. JOURNAL OF MATERIALS SCIENCE,2019,54(4):3558-3571. |
| APA | Xie, Jilin,Ma, Yingche,Xing, Weiwei,Ou, Meiqiong,Zhang, Long,&Liu, Kui.(2019).Microstructure and mechanical properties of a new cast nickel-based superalloy K4750 joint produced by gas tungsten arc welding process.JOURNAL OF MATERIALS SCIENCE,54(4),3558-3571. |
| MLA | Xie, Jilin,et al."Microstructure and mechanical properties of a new cast nickel-based superalloy K4750 joint produced by gas tungsten arc welding process".JOURNAL OF MATERIALS SCIENCE 54.4(2019):3558-3571. |
入库方式： OAI收割
来源：金属研究所
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