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
SDGs
View:500 Download:192