Effect of Molybdenum and Chromium on Hardenability of Low-Carbon Boron-Added Steels

被引：53

作者：

Han, Futao ^{[1
,2
]}

Hwang, Byoungchul

Suh, Dong-Woo ^{[1
]}

Wang, Zuocheng ^{[2
]}

Lee, Dulk Lak ^{[3
]}

Kim, Sung-Joon ^{[1
]}

机构：

[1] Korea Inst Mat Sci, Dept Adv Met Mat, Chang Won 641010, Gyeongnam, South Korea

[2] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China

[3] POSCO, Wire & Rod Res Grp, Tech Res Labs, Pohang 790785, Gyeongbuk, South Korea

来源：

METALS AND MATERIALS INTERNATIONAL | 2008年 / 14卷 / 06期

关键词：

hardenability; molybdenum; chromium; boron-added steel;

D O I：

10.3365/met.mat.2008.12.667

中图分类号：

T [工业技术];

学科分类号：

08 ;

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 boron-added steel almost completely suppressed the formation of polygonal ferrite even at a slow cooling rate of 0.5 degrees C/s. The synergistic effect of the combined addition of molybdenum and boron is thought to be due to both the suppression of M-23(C,B)(6) precipitation resulting from the deterioration of phase stability and the reduction of carbon diffusivity by the molybdenum addition.

引用

页码：667 / 672

页数：6

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