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| 时效处理对Cr20Ni32AlTi合金室温冲击性能的影响 | |
| 引用本文： | 杨常春,康永林,王立新,秦升.时效处理对Cr20Ni32AlTi合金室温冲击性能的影响[J].钢铁研究学报,2012,24(3):50-52. |
| 作者姓名： | 杨常春 康永林 王立新 秦升 |
| 作者单位： | 1. 北京科技大学材料科学与工程学院,北京100083／太原钢铁集团有限公司,山西太原030003] 2. 北京科技大学材料科学与工程学院,北京,100083 3. 太原钢铁集团有限公司,山西太原030003] |
| 摘 要： | 研究了铁镍基耐热耐蚀合金Cr20Ni32AlTi在1150℃、15min固溶处理并经450~850℃、05~5h的时效处理后室温冲击性能的变化规律。结果表明，450℃时效冲击性能最好。随时效温度升高，时效时间延长，冲击性能下降。450~850℃时效时，在合金晶界上有碳化物M23C6析出，且随温度增加和时间延长，析出增加。850℃时冲击功最低，此时碳化物M23C6析出相呈连续颗粒状析出，布满整个晶界。且观察到一些部位碳化物M23C6析出相形成薄膜，冲击时因基体变形而脆断成条块状。 |
| 关 键 词： | Cr20Ni32AlTi 时效处理 室温 冲击性能 |
Effect of Aging Treatment on Impact Properties of Cr20Ni32AlTi Alloy at Room Temperature |
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| YANG Chang-chun,KANG Yong-lin,WANG Li-xin,QIN Sheng.Effect of Aging Treatment on Impact Properties of Cr20Ni32AlTi Alloy at Room Temperature[J].Journal of Iron and Steel Research,2012,24(3):50-52. | |
| Authors: | YANG Chang-chun KANG Yong-lin WANG Li-xin QIN Sheng |
| Affiliation: | 1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China ; 2. Taiyuan Iron and Steel Corporation Limited, Taiyuan 030003, Shanxi, China |
| Abstract: | Effect of aging treatment on impact mechanical properties at room temperature of heat-resistant Fe-Ni base Cr20Ni32AlTi alloy with 1 150 ℃ for 15 min solution and aged 450-850 ℃ for 0.5-5 h was investigated.The results are as follows: with aging at 450 ℃,the impact property of Cr20Ni32AlTi alloy is up to maximum value.With increasing aging temperature and aging time,the impact property decreases.As aging at 450-850 ℃,the carbide M23C6 precipitates on the grain boundaries.Moreover the precipitated carbide is more with increasing aging temperature and aging time.With aging at 850 ℃,the continuous granular carbide M23C6 at the grain boundaries allover leads to the lowest compact energy AKV.Also it is observed that carbide M23C6 somewhere form a thin film that broke to pieces and strips. |
| Keywords: | heat-resistant Fe-Ni base Cr20Ni32AlTi alloy aging treatment room temperature impact mechanical property |
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