| 25-12型奥氏体耐热铸钢时效后的组织与性能 |
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| 引用本文： | 刘江文,欧阳柳章,罗承萍,肖晓玲,陈和兴. 25-12型奥氏体耐热铸钢时效后的组织与性能[J]. 机械工程材料, 2002, 26(5): 33-36 |
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| 作者姓名： | 刘江文 欧阳柳章 罗承萍 肖晓玲 陈和兴 |
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| 作者单位： | 1. 华南理工大学机电工程系,广东广州,510640
2. 广州有色金属研究院,广东广州,510650 |
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| 基金项目： | 广东省自然科学基金资助项目 (980 494) |
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| 摘 要： | 研究了经N，Nb和Re微合金化的25－12型奥氏体耐热铸钢的显微组织。该钢淬火时效后的组织由树枝状初晶奥氏体及分布于枝晶间的M23C6共晶碳化物组成，奥氏体中析出了二次M23C6，共晶碳化物附近存在无析出区现象；测试分析了材料的常温力学性能。
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| 关 键 词： | 奥氏体耐热钢 显微组织 力学性能 |
| 文章编号： | 1000-3738(2002)05-0033-04 |
| 修稿时间： | 2001-04-04 |
The Microstructure and Mechanical Properties of Aged 25-12 Austenitic Heat-resistant Cast Steel |
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| LIU Jiang wen ,OUYANG Liu zhang ,LUO Cheng ping ,XIAO Xiao ling ,CHEN He xing. The Microstructure and Mechanical Properties of Aged 25-12 Austenitic Heat-resistant Cast Steel[J]. Materials For Mechanical Engineering, 2002, 26(5): 33-36 |
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| Authors: | LIU Jiang wen OUYANG Liu zhang LUO Cheng ping XIAO Xiao ling CHEN He xing |
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| Affiliation: | LIU Jiang wen 1,OUYANG Liu zhang 1,LUO Cheng ping 1,XIAO Xiao ling 1,CHEN He xing 2 |
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| Abstract: | The microstructure of 25 12 austenitic heat resistant cast steel containing trace N, Nb and Re was investigated using TEM and optical microscopy. The results indicated that the microstructure of the aged steel consisted of M 23 C 6 eutectic carbide and dendritic austenite in which secondary carbide M 23 C 6 precipitated, and there was precipitate free zone (PFZ) nearby eutectic carbides. The room temperature mechanical properties of this steel were tested and analyzed. |
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| Keywords: | austenitic heat resistant steel microstructure mechanical property |
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