Tensile behavior of NiAl-9Mo eutectic alloy around brittle to ductile transition temperature
文献类型：期刊论文
| 作者 | W. L. Ren ; J. T. Guo ; G. S. Li ; J. Y. Zhou |
| 刊名 | Journal of Materials Science & Technology
 |
| 出版日期 | 2003 |
| 卷号 | 19期号:3页码:253-256 |
| 关键词 | NiAl-9Mo eutectic alloy BDT tensile behavior nialfe matrix composites mechanical-properties cr mo microstructures deformation |
| ISSN号 | 1005-0302 |
| 中文摘要 | The influence of strain rate and temperature on the tensile behavior of as-cast and HIPed NiAl-9Mo eutectic alloy was investigated in the temperature range of 700-950'C and over a strain rate range from 2.08 x 10(-4) s(-1) to 2.08x10(-2) s(-1). The results indicate that HIP process causes an enhancement in ductility and a decrease in ultimate tensile strength (UTS), yield strength (YS), average strain hardening rate as well as a drop in brittle to ductile transition temperature(BDTT) under the same condition. It is noticed that the BDTT of as-cast NiAl-9Mo is more dependent on strain rate than that of HIPed one. The brittle to ductile transition process of the alloy is related to a sharp drop in strain hardening rate. Regardless of strain rate, the fracture morphology changes from cleavage in NiAl phase and debonding along NiAl/Mo interface below the BDTT to microvoid coalescence above BDTT. The apparent activation energy of the BDT of HIPed and as-cast material are calculated to be 327 and 263 kJ/mol, respectively, suggesting that the mechanism is associated with lattice diffusion in NiAl phase. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36011]  |
| 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. L. Ren,J. T. Guo,G. S. Li,et al. Tensile behavior of NiAl-9Mo eutectic alloy around brittle to ductile transition temperature[J]. Journal of Materials Science & Technology,2003,19(3):253-256. |
| APA | W. L. Ren,J. T. Guo,G. S. Li,&J. Y. Zhou.(2003).Tensile behavior of NiAl-9Mo eutectic alloy around brittle to ductile transition temperature.Journal of Materials Science & Technology,19(3),253-256. |
| MLA | W. L. Ren,et al."Tensile behavior of NiAl-9Mo eutectic alloy around brittle to ductile transition temperature".Journal of Materials Science & Technology 19.3(2003):253-256. |
入库方式： OAI收割
来源：金属研究所
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