Chiang Mai Journal of Science

Sintered Dual-phase Steels Produced from Pre-alloyed Fe-Cr-Mo Powder

Paper Type	Contributed Paper
Title	Sintered Dual-phase Steels Produced from Pre-alloyed Fe-Cr-Mo Powder
Author	Wananurat Srijampan [a], Monnapas Morakotjinda [b], Rungtip Krataitong [b], Thanyaporn Yotkaew [b], Nattaya Tosangthum [b], Amporn Wiengmoon [a] and Ruangdaj Tongsri *[b]
Email	ruangdt@mtec.or.th
Abstract:  The sintered Fe-Cr-Mo-xC steels (where x = 0.05, 0.15, 0.25, 0.35 and 0.45 wt.% C) were produced by vacuum sintering and followed by slow cooling. The sintered steels showed microstructures consisting of mixed a + a¢ phases. The formation of a¢ phase was discussed with respect to the classical model for bainitic transformation. The morphologies of the a¢ phase regions changed from a thick film to a dark island to a bulk form with increasing C content. With the added C contents < 0.25 wt.%, the sintered steels showed low tensile strength and hardness but high ductility. When the C contents ≥ 0.25 wt.%, the sintered Fe-Cr-Mo-xC steels gained strength from the a¢ phase, whose volume fraction was increased with increasing C content.
Start & End Page	358 - 364
Received Date	2015-09-15
Revised Date
Accepted Date	2015-11-26
Full Text	Download
Keyword	sintered dual-phase steels, polygonal ferrite, bainite, mechanical property
Volume	Vol.43 No.2 (SPECIAL ISSUE 1)
DOI
Citation	Srijampan W., Morakotjinda M., Krataitong R., Yotkaew T., Tosangthum N., Wiengmoon A., et al., Sintered Dual-phase Steels Produced from Pre-alloyed Fe-Cr-Mo Powder, Chiang Mai J. Sci., 2016; 43(2): 358-364.
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