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| 洁净度和显微组织对管线钢性能的影响 | |
| 引用本文： | 杨振国,初瑞清,李守新,汪伟,单以银,杨柯,董瀚,翁宇庆.洁净度和显微组织对管线钢性能的影响[J].机械工程材料,2003,27(3):21-23. |
| 作者姓名： | 杨振国 初瑞清 李守新 汪伟 单以银 杨柯 董瀚 翁宇庆 |
| 作者单位： | 1. 中国科学院金属研究所,辽宁,沈阳,110016 2. 北京钢铁研究总院,北京,100081 3. 中国金属学会,北京,100711 |
| 基金项目： | 新一代钢铁材料重大基础研究资助项目 (G19980 615 ) |
| 摘 要： | 研究了洁净度和组织均匀性对四种管线钢板坯性能的影响。发现洁净度对钢材冲击韧度的影响要高于对强度的影响，提高洁净度可以大幅度提高钢材的冲击韧度。通过测量四种材料晶粒内部和晶界附近的纳米显微硬度，总体来看，晶界附近的硬度通常比晶粒内部高；而这种差别越小，所对应材料的冲击性能越好。 |
| 关 键 词： | 管线钢 洁净度 纳米显微硬度 力学性能 |
| 文章编号： | 1000-3738(2003)03-0021-03 |
| 修稿时间： | 2002年2月4日 |
The Influence of Purity and Microstructure on Properties of Pipeline Steel |
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| YANG Zhen guo ,CHU Rui qing ,LI Shou xin ,WANG Wei ,SHAN Yi yin ,YANG Ke ,DONG Han ,WENG Yu qing.The Influence of Purity and Microstructure on Properties of Pipeline Steel[J].Materials For Mechanical Engineering,2003,27(3):21-23. | |
| Authors: | YANG Zhen guo CHU Rui qing LI Shou xin WANG Wei SHAN Yi yin YANG Ke DONG Han WENG Yu qing |
| Affiliation: | YANG Zhen guo 1,CHU Rui qing 1,LI Shou xin 1,WANG Wei 1,SHAN Yi yin 1,YANG Ke 1,DONG Han 2,WENG Yu qing 3 |
| Abstract: | The influence of purity on mechanical properties of pipeline steels had been investigated. It was found that the purity had greater influence on impact toughness than on strength. The impact toughness had been obviously improved with the increase of purity. Comparison of the nanoindentation hardness of near grain boundary to that of inner grain showed that the nanoindentation hardness of near grain boundary was generally higher than that of inner grain. Those samples with little difference nanoindentation hardness between near grain boundary and inner grain held higher impact toughness. |
| Keywords: | pipeline steel purity nanoindentation hardness mechanical property |
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