| Influence of direction of notch on thermal fatigue property of a directionally solidified nickel base superalloy | |
| Xia Pengcheng1,2; Yang Lei1; Yu Jinjiang2; Sun Xiaofeng2; Guan Hengrong2; Hu Zhuangqi2 | |
| Corresponding Author | Xia Pengcheng(xpc328@126.com) |
| 2011-03-01 | |
| Source Publication | RARE METALS
 |
| ISSN | 1001-0521 |
| Volume | 30Pages:472-476 |
| Abstract | 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. |
| Keyword | directionally solidified nickel base superalloy notched direction thermal fatigue crack initiation and propagation |
| Funding Organization | National Basic Research Program (973 Program) ; National Natural Science Foundation of China (NSFC) |
| DOI | 10.1007/s12598-011-0327-0 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Basic Research Program (973 Program)[2010CB631200 (2010CB631206)] ; National Natural Science Foundation of China (NSFC)[50931004] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000303126300101 |
| Publisher | NONFERROUS METALS SOC CHINA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/105505 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Xia Pengcheng |
| Affiliation | 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 |
| Recommended Citation 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. |
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