Julong HE
,
Dongli YU
,
Ming ZHANG
,
Yongiun TIAN
,
Shizhen CHEN and Dongchun LI (Yanshan University
,
Qinhuangdao
,
066004
,
China)
材料科学技术（英文）
The liquid sintering characteristics have been studied in the sintered compacts of short cast iron fibers added with Ni-Cr based alloy powder at the sintering temperature of 1100℃. With the increase of Ni-Cr based alloy content, the microstructure of sintered compact of short cast iron fibers transformed from pearlite+ferrite to martensite+austenite, meanwhile volume expansion appeared in the sintered compact, leading to more pores. The proper addition of P-Fe powder could restrain the expansion of the sintered compact and increase the strength and hardness of the sintered compact.
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