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Research on sintering temperature of iron-based PM vavle guide |
LIU Jian1, XUAN Tian-peng1, DAI Ze-yu2, YUAN Chun2 |
1. School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China 2. Anhui Jinyi Alloy New Materials Co., Ltd., Anqing 231431, China |
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Abstract Fe-Cu-C vavle guide was prepared by powder metallurgy with two common sintering temperatures, and the microstructure, density, hardness and crushing strength of the samples were tested. The results show that decarburization at high temperature zone is more serious for the samples sintered at 1 150 ℃ compared to the samples sintered at 1 120 ℃, and the pearlite amount and hardness also decrease when sintered at 1 150 ℃. Furthermore, high temperature accelerates the diffusion of copper, leading to increased porosity and decreased density. In consideration of microstructure, properties and production costs, 1 120 ℃ is the suitable sintering temperature.
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Received: 05 May 2014
Published: 18 December 2014
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[1] |
韩凤麟.粉末冶金零件在汽车发动机中的应用[J].现代零部件,2003,31(3):74-76.
|
[2] |
张华诚.粉末冶金实用工艺学[M].北京:冶金工业出版社,2004:361-363.
|
[3] |
Hideaki Kawata,Kunio Maki.耐热耐磨烧结合金发展趋势[J]. Powder Metallurgy Technology,2011,29(5):387-388.
|
[4] |
屈盛官.铁基粉末温压成形过程的基础理论与应用研究[D].广东:华南理工大学机械制造及自动化专业,2005:109-110.
|
[5] |
钟文红.280-285型柴油机气门导管的自制[J].内燃机车,2007,5(5):27-28.
|
[6] |
朱远志,尹志名,曾渝,等.重型发动机气门座圈工艺、材料研究进展[J].材料导报,2004,5(18):45-49.
|
[7] |
韩凤麟.汽车发动机粉末冶金阀座圈合金进展[J].粉末冶金技术,2002,20(1):38-48.
|
[8] |
严彪,吴菊清,李祖德,等.现代粉末冶金手册[M].北京:化学工业出版社,2013:268-273.
|
[9] |
韩凤麟.粉末冶金Fe-2%Cu-0.5%C材料的显微结构对疲劳性能的影响[J].粉末冶金工业,2011,21(4):2-3.
|
[10] |
姚萍屏,张忠义,汪琳,等.烧结温度对铁基粉末冶金航空刹车材料组织的影响[J].粉末冶金材料科学与工程,2007,12(3):161-163.
|
[11] |
丁华堂.铁基粉末冶金零件烧结过程氧化、脱碳的原因及解决办法[J].粉末冶金工业,2008,18(5):37-39.
|
[12] |
陈焕贤.铁基制品烧结用分解氨气氛的脱碳控制[J].粉末冶金工业,1999,9(6):35-37.
|
[13] |
Ulf Engstr ?m.Copper in P/M steel[J].the International Journal of Powder Metallurgy,2003,39(4):29-39.
|
[14] |
刘芳,周科朝,李志友. 新型碳化物颗粒增强铁基粉末冶金材料的组织与性能[J].机械工程材料,2012,36(5):18-22.
|
[15] |
章林,刘芳,李志友,等.高合金含量铁基烧结材料的致密化及性能[J].粉末冶金材料科学与工程,2005,10(3):173-174.
|
|
|
|