Influence of direction of notch on thermal fatigue property of a directionally solidified nickel base superalloy
文献类型：期刊论文
| 作者 | Xia Pengcheng1,2; Yang Lei1; Yu Jinjiang2; Sun Xiaofeng2; Guan Hengrong2; Hu Zhuangqi2 |
| 刊名 | RARE METALS
 |
| 出版日期 | 2011-03-01 |
| 卷号 | 30页码:472-476 |
| 关键词 | directionally solidified nickel base superalloy notched direction thermal fatigue crack initiation and propagation |
| ISSN号 | 1001-0521 |
| DOI | 10.1007/s12598-011-0327-0 |
| 通讯作者 | Xia Pengcheng(xpc328@126.com) |
| 英文摘要 | Thermal fatigue property of a directionally solidified nickel base superalloy at the condition of different notched orientation and upper temperatures was investigated. The results show that cycle numbers of crack initiation decrease, propagation rate of crack increases and resistance of thermal fatigue reduces with the rise of upper temperature. Thermal fatigue property of the specimen with the notched direction vertical to orientation of dendrite growth (DZ319T) is superior to that of the specimen with the notched direction parallel to orientation of dendrite growth (DZ319L). DZ319L alloy initiates thermal fatigue crack by carbide and propagates along the direction of carbide distribution, which resultes in big propagation rate and poor thermal fatigue property. Crack initiation of DZ319T alloy is mainly by oxidized cavity. The join of oxidized cavity makes crack propagate. There are two cracks in DZ319T alloy, which greatly drops the stress concentration near the notch and decreases the propagation rate of crack. DZ319T alloy has excellent thermal fatigue property. |
| 资助项目 | National Basic Research Program (973 Program)[2010CB631200 (2010CB631206)] ; National Natural Science Foundation of China (NSFC)[50931004] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000303126300101 |
| 出版者 | NONFERROUS METALS SOC CHINA |
| 资助机构 | National Basic Research Program (973 Program) ; National Natural Science Foundation of China (NSFC) |
| 源URL | [http://ir.imr.ac.cn/handle/321006/105504]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Xia Pengcheng |
| 作者单位 | 1.Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266510, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia Pengcheng,Yang Lei,Yu Jinjiang,et al. Influence of direction of notch on thermal fatigue property of a directionally solidified nickel base superalloy[J]. RARE METALS,2011,30:472-476. |
| APA | Xia Pengcheng,Yang Lei,Yu Jinjiang,Sun Xiaofeng,Guan Hengrong,&Hu Zhuangqi.(2011).Influence of direction of notch on thermal fatigue property of a directionally solidified nickel base superalloy.RARE METALS,30,472-476. |
| MLA | Xia Pengcheng,et al."Influence of direction of notch on thermal fatigue property of a directionally solidified nickel base superalloy".RARE METALS 30(2011):472-476. |
入库方式： OAI收割
来源：金属研究所
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