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.
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Start & End Page |
358 - 364 |
Received Date |
2015-09-15 |
Revised Date |
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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 |
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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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