全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用：99美元
投递稿件

查看量下载量

相关文章

更多...
材料工程  2008 

微波烧结Fe-2Cu-0.6C合金的保温时间对组织与性能的影响

, PP. 51-55

Keywords: 微波烧结,Fe-Cu-C合金,显微组织,力学性能

Full-Text   Cite this paper   Add to My Lib

Abstract:

对微波烧结Fe-2Cu-0.6C粉末冶金材料进行了1150℃不同保温时间下的性能和显微组织研究,并与常规烧结试样进行了对比.结果表明微波烧结保温时间由5min增加至15min,试样的各项性能达到最佳密度为7.22g/cm3,硬度HRB为78,抗拉强度为416.8MPa,延伸率为5.5%;保温时间延长至20min对试样性能影响不大.微波烧结的性能较常规烧结高.通过金相显微分析表明微波烧结有着良好的微观结构,即小的、近圆形且均匀分布的孔隙结构,从而也有利于获得细小的晶粒和高的致密度;微波烧结较常规烧结有着更多片状和粒状珠光体,能显著改善其性能.由断口分析可知,常规烧结样品属于脆性穿晶断裂,而微波烧结样品为脆性穿晶断裂和韧窝型的穿晶韧性断裂的混合型断裂.

 References

[1]  AGRAWAL D.Metal parts from microwaves[J].Materials World,1999,7(11):672-673.
[2]  马金龙,童学锋,彭虎.烧结技术的革命[J].新材料产业,2001,11(6):30-32.
[3]  易健宏,唐新文,罗述东,等.微波烧结技术的发展及展望[J].粉末冶金技术,2003,21(6):351-354.
[4]  LIN I-NAN,WAN-CHU LEE,KUO-SHUNG LIU.On the microwave sintering technology for improving the properties of semiconducting electronic ceramics[J].Journal of the European Ceramie Society,2001,(21):2085-2088.
[5]  林枞,许业文,徐政.陶瓷微波烧结技术研究进展[J].硅酸盐通报,2006,25(3):132-135.
[6]  周健,程吉平,袁润章,等.微波烧结WC-Co细晶硬质合金的工艺与性能[J].中国有色金属学报,1999,9(3):465-468.
[7]  PANDA S S,SINGH V,UPADHYAYA A,et al.Effect of conventional and microwave sintering on the properties of yttria alumina garnet-dispersed austenitic stainless steel[J].Metallurgical and materials transactions A,2006,37:2253-2264.
[8]  CHIEN-YIH TSAYA,KUO-SHUNG LIUA,LINB I-NAN.Microwave sintering of(Bi0.75Ca1.2Y1.05)(V0.6Fe4.4)O1z microwave magnetic materials[J].Journal of the European Ceramic Society,2004,24:1057-1061.
[9]  WONG W L E,GUPTA M.Development of Mg/Cu nanocomposites using microwave assisted rapid sintering[J].Composites Science and Technology,2007,67:1541-1552.
[10]  GEDEVANISHVIU S,AGRAWAL D,ROY R.Microwave combustion synthesis and sintering of intermetallies and alloy[J].J Mat Sci Lett,1999,18:665-667.
[11]  ROY R,AGRAWAL D,CHENG J P,et al.Full sintering of powdered-metal bodies in a microwave field[J].Nature,1999,399(17):665-670.
[12]  ANKLEKAR R M,AGRAwAL D K,ROY R.Microwave sintering and mechanical properties of PM copper steel[J].Powder Metallurgy,2001,44(5):355-362.
[13]  易健宏,罗述东,唐新文,等.金属基粉末冶金零部件的微波烧结机理初探[J].粉末冶金工业,2003,13(2):22-25.
[14]  JOKISAARI J R,BHADURI S,BHADURI S B.Microwave activated combustion synthesis of titanium aluminides[J].Materials Science and Engineering A,2005,394:385-392.
[15]  黄加伍,彭虎.粉末冶金Fe-Cu-C合金的微波烧结研究[J].矿冶工程,2005,25(5):77-79.
[16]  罗春峰,李溪滨,刘如铁,等.微波烧结对粉末冶金铁基材料性能的影响[J].湖南冶金,2006,34(2):7-10.
[17]  SAITOU K.Microwave sintering of iron,cobalt,nickel,copper and stainless steel powders[J].Scripta Materialia,2006(54):875-879.
[18]  姜锡山.特殊纲金相图谱[M].北京:机械工业出版社,2003.
[19]  张九渊.表面工程与失效分析[M].杭州:浙江大学出版社,2006.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133