部分扩散预合金温压铁-铜-镍-钼-碳材料的组织与性能
Study on the Mechanical Properties and Microstructure of Partially-diffuse Alloyed Fe-Cu-Ni-Mo-C Materials
摘 要
对部分扩散预合金Fe-2Cu-2Ni-1Mo-1C粉末的温压行为及烧结和热处理后的组织和性能进行了研究.结果表明:模壁润滑温压工艺能明显提高烧结材料的密度和性能;在130 ℃、400~700 MPa压力范围内材料压坯密度、烧结密度和烧结性能均随压制压力增大而提高;700 MPa下材料压坯密度7.34 g/cm3;1 150 ℃烧结60 min后密度为7.32 g/cm3,抗拉强度达到853 MPa,表面硬度302 HB,伸长率4.4%;热处理对烧结材料力学性能提高效果显著;880 ℃淬火＋350 ℃回火60 min材料的综合性能较好,抗拉强度1 086 MPa,表面硬度295 HB,伸长率3.7%,显微组织为马氏体、回火屈氏体和残余奥氏体.
部分扩散预合金
粉末冶金
die wall lubricated warm compaction
partially-diffuse alloyed
powder mtallurgy
Abstract
The warm compacting behavior,mechanical properties and microstructure of sintered and heat treated of partially-diffuse alloyed Fe-2Cu-2Ni-1Mo-1C powders were studied in this paper.Results show that die wall lubricated warm compaction technology could improve the densities and mechanical properties of Fe-2Cu-2Ni-1Mo-1C materials.At 130 ℃,green density,sintered density and mechanical properties of the sintered materials increase when the compacting pressure increased from 400 MPa up to 700 MPa.Materials have a green density of 734 g/cm3,sintered density of 7.32 g/cm3,tensile strength of 853 MPa,apparent hardness of 302 HB and elongation of 4.4% when formed at a compacting pressure of 700 MPa and sintered at 1 150 ℃ in hydrogen atmosphere for 60 min.Mechanical properties of heat treated Fe-2Cu-2Ni-1Mo-1C materials are enhanced obviously.The optimum mechanical properties were obtained when the materials quenched from 880 ℃ and tempered at 350 ℃ for 60 min.Materials had a tensile strength of 1 086 MPa,apparent hardness of 295 HB and elongation of 3.7%.Martensite,temper troostite and retained austenite are observed in the microstructure.
中图分类号 TF124
所属栏目
基金项目 国家自然科学基金资助项目(50574041);广东省自然科学基金重点资助项目(06105411);广东省及广州市科技计划资助项目(2004B10301018,2006Z1-D6081);教育部新世纪优秀人才资助项目(NCET-05-0739)
收稿日期 2006/11/26
修改稿日期 2007/3/30
网络出版日期
作者单位点击查看
备注沈元勋(1981-),男,河南南阳人,硕士研究生.
引用该论文: SHEN Yuan-xun,XIAO Zhi-yu,FANG Liang,ZHANG Wen,LI Yuan-yuan. Study on the Mechanical Properties and Microstructure of Partially-diffuse Alloyed Fe-Cu-Ni-Mo-C Materials[J]. Materials for mechancial engineering, 2007, 31(9): 30～33
沈元勋,肖志瑜,方亮,张文,李元元. 部分扩散预合金温压铁-铜-镍-钼-碳材料的组织与性能[J]. 机械工程材料, 2007, 31(9): 30～33
被引情况:
【1】蒋晓冬,刘子利,邹德华,刘伯路, "温压制备Fe-1.8Ni-0.5Mo-1.2Cu-0.2C粉末冶金齿轮的组织与性能",机械工程材料 36, 46-49(2012)
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参考文献
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【6】李金花,倪东惠,朱权利,等.粉末冶金温压工艺制备Fe-Cu-C材料[J].机械工程材料,2005,29(5):38-40.
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【8】Li Yuanyuan,Ngai Tungwai Leo,Zhang Datong,et al.Effect die wall lubrication on warm compaction powder metallurgy[J].Journal of Materials Processing Technology,2002,129(13):354-358.
【9】Ngal T Leo,Chen W P,Xiao Z Y,et al.Die wall lubricated warm compaction of iron-based powder metallurgy materials[J].Trans Nonferrous Met Soc China,2002,12(6):1095-1098.
【10】Brian James W,CO’ Brien R.High performance ferrous PM materials:The effect of alloying method on dynamic properties[J].Metal Powder Report,1984(4):251-260.
【11】章林,李志友,周科朝,等.元素粉末预合金化对烧结合金钢组织和性能的影响[J].粉末冶金材料科学与工程,2005,10(4):225-230.
【12】刘世民,黄伯云,曾德麟,等.合金化方法对铁基粉末材料性能的影响[J].粉末冶金工业,2002,12(6):26-29.
【13】张菊红,肖志瑜,温利平,等.不同方法制备的温压粉末形貌及工艺性能[J].粉末冶金材料科学与工程,2006,11(3):155-158.
【14】李明怡,果世驹,林涛.压制参数对铁粉温压致密化过程的影响[J].粉末冶金工业,2001,11(3):29-33.
【15】Xiao Z Y,Ngail T L,Li Y Y.Investigation on the densification mechanism of warm compaction[J].Materials Science Forum,2007,539/543:2699-2704.
【16】黄培云.粉末冶金原理[M].第2版.北京:冶金工业出版社,1997:377-380.
【17】肖志瑜,张菊红,吴苑标,等.烧结参数对温压Fe-2Ni-2Cu-1Mo-1C材料抗拉强度的影响[J].中国有色金属学报,2006,16(8):1326-1330.
【2】Rutz H,Hanejko F.High density processing of high performance ferrous materials[J].Advances in Powder Metallurgy & Particulate Materials,1995(5):117-133.
【3】肖志瑜,李元元,邱诚,等.温压工艺及其关键技术[J].机械工程材料,2001,25(11):18-21.
【4】曹顺华,曲选辉,黄伯云,等.温压致密化机理及其在温压粉末设计中的应用[J].机械工程材料,2002,126(6):9-11.
【5】张双益,李元元.铁基粉末冶金材料的温压工艺[J].机械工程材料,2000,24(1):26-28.
【6】李金花,倪东惠,朱权利,等.粉末冶金温压工艺制备Fe-Cu-C材料[J].机械工程材料,2005,29(5):38-40.
【7】Ball W G,Hibner P F,Winger F W,et al.New die wall lubrication system[J].Powder Metallurgy Industry,1997,33(1):23-30.
【8】Li Yuanyuan,Ngai Tungwai Leo,Zhang Datong,et al.Effect die wall lubrication on warm compaction powder metallurgy[J].Journal of Materials Processing Technology,2002,129(13):354-358.
【9】Ngal T Leo,Chen W P,Xiao Z Y,et al.Die wall lubricated warm compaction of iron-based powder metallurgy materials[J].Trans Nonferrous Met Soc China,2002,12(6):1095-1098.
【10】Brian James W,CO’ Brien R.High performance ferrous PM materials:The effect of alloying method on dynamic properties[J].Metal Powder Report,1984(4):251-260.
【11】章林,李志友,周科朝,等.元素粉末预合金化对烧结合金钢组织和性能的影响[J].粉末冶金材料科学与工程,2005,10(4):225-230.
【12】刘世民,黄伯云,曾德麟,等.合金化方法对铁基粉末材料性能的影响[J].粉末冶金工业,2002,12(6):26-29.
【13】张菊红,肖志瑜,温利平,等.不同方法制备的温压粉末形貌及工艺性能[J].粉末冶金材料科学与工程,2006,11(3):155-158.
【14】李明怡,果世驹,林涛.压制参数对铁粉温压致密化过程的影响[J].粉末冶金工业,2001,11(3):29-33.
【15】Xiao Z Y,Ngail T L,Li Y Y.Investigation on the densification mechanism of warm compaction[J].Materials Science Forum,2007,539/543:2699-2704.
【16】黄培云.粉末冶金原理[M].第2版.北京:冶金工业出版社,1997:377-380.
【17】肖志瑜,张菊红,吴苑标,等.烧结参数对温压Fe-2Ni-2Cu-1Mo-1C材料抗拉强度的影响[J].中国有色金属学报,2006,16(8):1326-1330.
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