Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 13    No. 6    December 2003

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Effect of sintering parameters on warm compacted iron-based material
LI Yuan-yuan(李元元), XIAO Zhi-yu(肖志瑜), NGAI Tungwai Leo(倪东惠), 
XIA Wei(夏 伟), CHEN Wei-ping(陈维平)

Advanced Metallic Materials Research and Processing Technology Center, 
South China University of Technology, Guangzhou 510640, China

Abstract:Iron-based powder metallurgy material was prepared by warm compaction at 125℃ using a compacting pressure of 700MPa. Sintering temperature ranging from 1100℃ to 1300℃ and sintering time ranging from 40min to 80min were used to study the effects of sintering parameters on the compacts. Die wall lubrication polytetrafluoroethylene(PTFE) emulsion was also applied in combination with warm compaction in hope to increase the compact density and the mechanical properties of the sintered material. Green and sintered density, spring back effect and sinter shrinkage were measured. Mechanical properties of both as-sinter and heat treated samples were also measured. Results show that mechanical properties of the sintered compacts increase with the increase of sintering temperature and sintering time. Sample prepared by die wall lubricated warm compaction always shows higher density and mechanical properties.

 

Key words: warm compaction; powder metallurgy; iron-based material; sintering; die wall lubrication

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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