Microstructure heterogeneity and creep damage of DZ125 nickel-based superalloy
文献类型：期刊论文
| 作者 | Sun Haofang2; Tian Sugui2; Tian Ning2; Yu Huichen1; Meng Xianlin2 |
| 刊名 | Progress in Natural Science: Materials International
 |
| 出版日期 | 2014 |
| 卷号 | 24期号:3页码:266-273 |
| 关键词 | DZ125 nickel-based superalloy Microstructure Creep mechanism Materials of engineering and construction. Mechanics of materials TA401-492 |
| ISSN号 | 1002-0071 |
| 其他题名 | Microstructure heterogeneity and creep damage of DZ125 nickel-based superalloy |
| 英文摘要 | The creep behavior of the DZ125 superalloy at high temperatures has been investigated based on the creep properties measurement and microstructure observations. The experimental results show that, after full heat treatment, the fine and coarser cuboidal γ′ precipitates distributed in the dendrite arm and inter-dendrite regions, respectively, the boundaries with various configurations located in the inter-dendrite regions. In the primary creep stage, the cuboidal γ′ phase in the alloy transformed into the rafted structure along the direction vertical to the stress axis. The dislocations slipping and climbing over the rafted γ′ phase are attributed the deformation mechanism of the alloy during steady-state creep. The (1/2)?110? dislocations slipping in the γ matrix and ?110? super-dislocations shearing into the γ′ phase are the deformation mechanisms of the alloy in the latter stage of creep. And then the alternate slipping of dislocations results in the initiation and propagation of the micro-cracks along the boundaries until the occurrence of the creep fracture. Since the grain boundaries with various angles relative to the stress axis distribute in the different regions, the initiation and propagation of micro-cracks along the boundaries display the various features. |
| 语种 | 英语 |
| CSCD记录号 | CSCD:5197925 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/156973]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.Beijing Institute Aeronaut Mat, Beijing 100095, Peoples R China 2.中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Sun Haofang,Tian Sugui,Tian Ning,et al. Microstructure heterogeneity and creep damage of DZ125 nickel-based superalloy[J]. Progress in Natural Science: Materials International,2014,24(3):266-273. |
| APA | Sun Haofang,Tian Sugui,Tian Ning,Yu Huichen,&Meng Xianlin.(2014).Microstructure heterogeneity and creep damage of DZ125 nickel-based superalloy.Progress in Natural Science: Materials International,24(3),266-273. |
| MLA | Sun Haofang,et al."Microstructure heterogeneity and creep damage of DZ125 nickel-based superalloy".Progress in Natural Science: Materials International 24.3(2014):266-273. |
入库方式： OAI收割
来源：金属研究所
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