| 复压复烧对预合金钢粉烧结材料性能的影响 |
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| 引用本文： | 高翔,袁勇,张德金,李威,蔺瑞冬,崔建民,罗丰华.复压复烧对预合金钢粉烧结材料性能的影响[J].中南大学学报(自然科学版),2011(9). |
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| 作者姓名： | 高翔 袁勇 张德金 李威 蔺瑞冬 崔建民 罗丰华 |
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| 作者单位： | 中南大学粉末冶金国家重点实验室;莱芜钢铁集团粉末冶金有限公司; |
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| 基金项目： | 国家科技支撑计划项目(2009BAE74B02); 湖南省博士后科学基金资助项目(2009RS3027); 粉末冶金国家重点实验室创新基金资助项目(200902) |
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| 摘 要： | 通过在预合金钢粉中加入C等元素,采用模压-烧结和复压复烧2种方法制备粉末冶金低合金钢,并对其密度、显微组织、力学性能和断口形貌进行分析。研究结果表明:对于添加质量分数为0.8%C的合金粉末,用普通压制-烧结法制备的样品密度最高为7.15 g/cm3,抗拉强度为406 MPa;而用复压复烧法制得的样品密度可达7.53 g/cm3,抗拉强度为611 MPa,伸长率也有很大提升;复压复烧法制得的样品孔隙较少且圆滑平直化,断口分布有大量的韧窝,因此,合金的强度和塑性均较高。
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| 关 键 词： | 粉末冶金 预合金钢粉 复压复烧 拉伸性能 |
Influence of double press/double sinter processing on sintered alloys made from pre-alloyed steel powder |
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| GAO Xiang,YUAN Yong,ZHANG De-jin,LI Wei,LIN Rui-dong,CUI Jian-min,LUO Feng-hua.Influence of double press/double sinter processing on sintered alloys made from pre-alloyed steel powder[J].Journal of Central South University:Science and Technology,2011(9). |
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| Authors: | GAO Xiang YUAN Yong ZHANG De-jin LI Wei LIN Rui-dong CUI Jian-min LUO Feng-hua |
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| Institution: | GAO Xiang1,YUAN Yong2,ZHANG De-jin2,LI Wei1,LIN Rui-dong1,CUI Jian-min2,LUO Feng-hua1,2 (1.State Key Laboratory for Powder Metallurgy,Central South University,Changsha 410083,China,2.Laiwu Iron & Steel Group Powder Metallurgy Co.Ltd,Laiwu 271105,China) |
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| Abstract: | PM low alloy steel samples were prepared by die-wall pressing-sintering and double press/double sinter(DP/DS) processing.The density,mechanical properties,microstructure and fractography were analyzed.The results indicate that the density of the sintered alloys with 0.8% graphite addition prepared by die-wall pressing-sintering is the maximum 7.15 g/cm3,and the ultimate tensile strength is 406 MPa;when prepared by DP/DS processing,the density can achieve 7.53 g/cm3,the ultimate tensile strength is 611 MPa,a... |
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| Keywords: | powder metallurgy pre-alloyed steel powder double press/double sinter tensile properties |
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