Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44
文献类型：期刊论文
| 作者 | Hou, JS; Guo, JT; Zhou, LZ; Ye, HQ |
| 刊名 | ZEITSCHRIFT FUR METALLKUNDE
 |
| 出版日期 | 2006-02-01 |
| 卷号 | 97期号:2页码:174-181 |
| 关键词 | sigma formation K44 alloy kinetics mechanical properties |
| ISSN号 | 0044-3093 |
| 通讯作者 | Guo, JT() |
| 英文摘要 | The sigma phase (a) formation in long-term aged polycrystalline K44 superalloy has been studied as a function of aging temperature and time. The sigma phase in K44 alloy forms mainly in dendrite cores with a few at interdendritic regions. The kinetics of sigma formation can be described by the Johnson-Avrami-Mehl equation that yields activation eneraies of more than 130 U/mol in an early stage and less than 100 U/mol in steady state. Tensile experiments at room temperature and 1173 K and endurance experiments at 1173 K and 274 MPa were performed to test the effect of cy phases on these properties and no remarkable harmful effect is found. Moreover, the effect of long-term aging on the mechanical properties is realized mostly through the variation of gamma', not sigma phase formation. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000236898500012 |
| 出版者 | CARL HANSER VERLAG |
| 源URL | [http://ir.imr.ac.cn/handle/321006/86899]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Guo, JT |
| 作者单位 | Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hou, JS,Guo, JT,Zhou, LZ,et al. Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44[J]. ZEITSCHRIFT FUR METALLKUNDE,2006,97(2):174-181. |
| APA | Hou, JS,Guo, JT,Zhou, LZ,&Ye, HQ.(2006).Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44.ZEITSCHRIFT FUR METALLKUNDE,97(2),174-181. |
| MLA | Hou, JS,et al."Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44".ZEITSCHRIFT FUR METALLKUNDE 97.2(2006):174-181. |
入库方式： OAI收割
来源：金属研究所
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