Creep deformation and fracture of DZ40M directionally solidified cobalt-base superalloy at high temperature
文献类型：期刊论文
| 作者 | W. H. Jiang ; X. D. Yao ; H. R. Guan ; Z. Q. Hu |
| 刊名 | Transactions of Nonferrous Metals Society of China
 |
| 出版日期 | 1999 |
| 卷号 | 9期号:2页码:269-272 |
| 关键词 | directional solidification cobalt-base superalloy creep fracture |
| ISSN号 | 1003-6326 |
| 中文摘要 | The creep deformation and fracture of DZ40M directionally solidified cobalt-base superalloy have been investigated at 900 degrees C under stress in the range of 105 similar to 125 MPa, The microstructures, fractures and substructures of crept specimens have been examined by SEM and TEM. The results showed that DZ40M alloy exhibits a high creep ductility and its stress dependence of steady state creep rate is of a typical feature of precipitation hardened alloys, its creep behaviour is closely related to microstructural change. During creep, the primary carbides M7C3 and MC dissolved and the secondary M23C6 carbide profusely precipitated, which strengthens the matrix effectively. Creep cracks initiate at the primary carbides and propagate transgranularly. The surface of specimens was oxidized severely and the preferential oxidation of the primary carbides deteriorated creep rupture strength. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/37383]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | W. H. Jiang,X. D. Yao,H. R. Guan,et al. Creep deformation and fracture of DZ40M directionally solidified cobalt-base superalloy at high temperature[J]. Transactions of Nonferrous Metals Society of China,1999,9(2):269-272. |
| APA | W. H. Jiang,X. D. Yao,H. R. Guan,&Z. Q. Hu.(1999).Creep deformation and fracture of DZ40M directionally solidified cobalt-base superalloy at high temperature.Transactions of Nonferrous Metals Society of China,9(2),269-272. |
| MLA | W. H. Jiang,et al."Creep deformation and fracture of DZ40M directionally solidified cobalt-base superalloy at high temperature".Transactions of Nonferrous Metals Society of China 9.2(1999):269-272. |
入库方式： OAI收割
来源：金属研究所
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