Effect of molybdenum and chromium on hardenability of low-carbon boron-added steels

被引：0
作者：
Department of Advanced Metallic Materials, Korea Institute of Materials Science, 531, Changwondaero, Changwon, Gyeongnam 641-010, Korea, Republic of [1 ]
不详 [2 ]
不详 [3 ]
机构：
[1] Department of Advanced Metallic Materials, Korea Institute of Materials Science, Changwon, Gyeongnam 641-010, 531, Changwondaero
[2] School of Materials Science and Engineering, Shandong University
[3] Wire and Rod Research Group, Technical Research Laboratories, POSCO, Nam-gu, Pohang, Gyeongbuk 790-785, 1, Goe-dong
来源：
Met. Mater. Int. | 2008年 / 6卷 / 667-672期
关键词：
Boron-added steel; Chromium; Hardenability; Molybdenum;
D O I：
10.1007/BF03027980
中图分类号：
学科分类号：
摘要：
The hardenability of low-carbon boron-added steels containing molybdenum or chromium was studied using dilatometry, thermodynamic calculations, and secondary ion mass spectroscopy (SIMS). The combined addition of boron and molybdenum was found to be more effective than that of boron and chromium in enhancing the hardenability of boron-added steels. In particular, the addition of 0.5 wt.% molybdenum to the boronadded steel almost completely suppressed the formation of polygonal ferrite even at a slow cooling rate of 0.5°C/s. The synergistic effect of the combined addition of molybdenum and boron is thought to be due to both the suppression of M23(C,B)6 precipitation resulting from the deterioration of phase stability and the reduction of carbon diffusivity by the molybdenum addition.
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页码：667 / 672
页数：5
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