|
|||||
|
|
| 稀土元素对精密铸钢裂纹形成的影响 | |
| 引用本文： | 张红霞,杨体升,吴建刚. 稀土元素对精密铸钢裂纹形成的影响[J]. 湖北汽车工业学院学报, 2011, 25(2): 57-61 |
| 作者姓名： | 张红霞 杨体升 吴建刚 |
| 作者单位： | 1. 湖北汽车工业学院材料工程系,湖北十堰,442002 2. 东风精密铸造有限公司,湖北十堰,442000 |
| 基金项目： | 湖北省自然科学基金，湖北省教育厅科学技术重点研究项目 |
| 摘 要： | 设计了精密铸件裂纹敏感试样,通过在铸件成分中添加不同比例的稀土元素,探讨稀土元素对铸件产生裂纹倾向的影响.试验结果表明:合适的稀土添加量的增加,铸件裂纹率显著降低:金相组织分析表明,稀土元素添加能较好地细化晶粒,并有效改善夹杂物的数量、尺寸和分布,从而降低了铸钢的裂纹倾向. |
| 关 键 词： | 裂纹 稀土 夹杂物 精密铸件 |
Effect of Rare Earth Element on Crack Form of Cast Steel by Investment Casting |
|
| Zhang Hongxia,Yang Tisheng,Wu Jiangang. Effect of Rare Earth Element on Crack Form of Cast Steel by Investment Casting[J]. Journal of Hubei Automotive Industries Institute, 2011, 25(2): 57-61 | |
| Authors: | Zhang Hongxia Yang Tisheng Wu Jiangang |
| Affiliation: | 2(Department of Material Engineering,Hubei Automobile Industries Institute,Shiyan 442002,China) |
| Abstract: | A crack-sensitivity sample was designed for the study.The optimum rare-earth content was achieved by using rare-earth additions to the crack-sensitivity sample of investment castings.The results indicate that the cracks decrease with the increase of rare-earth additions.The steel with the right rare-earth additions has the least cracks.And the metallograph shows that RE can change the volume,size and distribution of the inclusions,decrease the grain size.Therefore,the cracks was reduced. |
| Keywords: | crack rare earth(RE) inclusion investment casting |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |