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

Futao Han; Byoungchul Hwang; Dong Woo Suh; Zuocheng Wang; Duk Lak Lee; Sung Joon Kim

doi:10.1007/BF03027980

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

Futao Han, Byoungchul Hwang, Dong Woo Suh, Zuocheng Wang, Duk Lak Lee, Sung Joon Kim

Dept. of Materials Science & Engineering

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	667-672
Number of pages	6
Journal	Metals and Materials International
Volume	14
Issue number	6
DOIs	https://doi.org/10.1007/BF03027980
State	Published - Dec 2008

Keywords

Boron-added steel
Chromium
Hardenability
Molybdenum

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10.1007/BF03027980

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title = "Effect of molybdenum and chromium on hardenability of low-carbon boron-added steels",

abstract = "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.",

keywords = "Boron-added steel, Chromium, Hardenability, Molybdenum",

author = "Futao Han and Byoungchul Hwang and Suh, \{Dong Woo\} and Zuocheng Wang and Lee, \{Duk Lak\} and Kim, \{Sung Joon\}",

year = "2008",

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doi = "10.1007/BF03027980",

language = "English",

volume = "14",

pages = "667--672",

journal = "Metals and Materials International",

issn = "1598-9623",

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TY - JOUR

T1 - Effect of molybdenum and chromium on hardenability of low-carbon boron-added steels

AU - Han, Futao

AU - Hwang, Byoungchul

AU - Suh, Dong Woo

AU - Wang, Zuocheng

AU - Lee, Duk Lak

AU - Kim, Sung Joon

PY - 2008/12

Y1 - 2008/12

N2 - 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.

AB - 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.

KW - Boron-added steel

KW - Chromium

KW - Hardenability

KW - Molybdenum

UR - https://www.scopus.com/pages/publications/58149262986

U2 - 10.1007/BF03027980

DO - 10.1007/BF03027980

M3 - Article

AN - SCOPUS:58149262986

SN - 1598-9623

VL - 14

SP - 667

EP - 672

JO - Metals and Materials International

JF - Metals and Materials International

IS - 6

ER -

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

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Keywords

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