| Effects of cobalt on creep rupture properties and dislocation structures in nickel base superalloys | |
| Department | 固体润滑国家重点实验室 |
Wang WZ(王文珍)1,2 ; Jin T(金涛)2; Jia JH(贾均红)1; Liu JL(刘金来)2; Hu ZQ(胡壮麒)2; Jin T(金涛)
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| 2015 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
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| ISSN | 0921-5093 |
| Volume | 624Pages:220-228 |
| Abstract | The influences of cobalt (Co) on creep rupture lives and dislocation structures in nickel base superalloys with and without rhenium (Re) are investigated. The creep rupture test conditions were high temperature low stress (1100 ℃/150 MPa), intermediate temperature and stress (982 ℃, 1010 ℃) and low temperature high stress (850 ℃/586 MPa). The results show that increasing Co content could enhance the creep rupture lives at low and intermediate temperature, and does not degrade the creep rupture lives of alloys at high temperature. In Re-containing alloys, at high temperature low stress (1100 ℃/150 MPa), the effects of Co on the dislocation structures are negligible, while at low temperature high stress (850 ℃/586 MPa), stacking faults are generated in alloy with 12% Co, and in alloy with 3% Co and free of Co, gamma prime particles are sheared by dislocation pairs. In Re-free alloys, at intermediate temperature and stress (1010 ℃/248 MPa), large quantities of stacking faults appear in alloy without Co, while in alloy having 12% Co, gamma prime particles are sheared by dislocation pairs coupled by anti-phase boundary (APB). The gamma prime sheared by stacking faults or by dislocation pairs coupled by APB depends on the competition of stacking faults energy and APB energy which is affected by temperature and the interaction of Re and Co. |
| Keyword | Cobalt Rhenium Creep Rupture Lives Dislocation Structures Nickel Base Superalloys |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1016/j.msea.2014.11.038 |
| Funding Organization | National Basic Research Program(973 Program) of China under Grant no. 2010CB631206;the National Natural Science Foundation of China (NSFC) under Grant no.51101166 |
| Indexed By | SCI |
| If | 2.647 |
| Language | 英语 |
| Funding Project | 高温抗磨材料组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/18690 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Jin T(金涛) |
| Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Dept Superalloys, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Wang WZ,Jin T,Jia JH,et al. Effects of cobalt on creep rupture properties and dislocation structures in nickel base superalloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2015,624:220-228. |
| APA | Wang WZ,Jin T,Jia JH,Liu JL,Hu ZQ,&金涛.(2015).Effects of cobalt on creep rupture properties and dislocation structures in nickel base superalloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,624,220-228. |
| MLA | Wang WZ,et al."Effects of cobalt on creep rupture properties and dislocation structures in nickel base superalloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 624(2015):220-228. |
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| Effects of cobalt on（4276KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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