Effects of carbon and chromium on microstructure evolution and mechanical properties of friction stir weldment in medium-carbon steel

Chun Cheng; Kota Kadoi; Shun Tokita; Hidetoshi Fujii; Kohsaku Ushioda; Hiroshige Inoue

doi:10.1016/j.msea.2019.138060

Effects of carbon and chromium on microstructure evolution and mechanical properties of friction stir weldment in medium-carbon steel

Chun Cheng, Kota Kadoi, Shun Tokita, Hidetoshi Fujii, Kohsaku Ushioda, Hiroshige Inoue

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

14 Citations (Scopus)

Abstract

The carbon and chromium contents significantly affected the microstructure evolution in the stir zones of medium-carbon steels during the friction stir welding (FSW). The stir zone of the 0.2%C–4%Cr steel has a high strength over 1.5 GPa with a good elongation of 30.3%, while the stir zones of the 0.4%C–2%Cr and 0.4%C–4%Cr steels had ultrahigh tensile strengths over 2 GPa with low elongation. Auto-tempered martensite is the main reason for the excellent balance of strength and ductility in the stir zone of 0.2%C–4%Cr steel.

Original language	English
Article number	138060
Journal	Materials Science and Engineering A
Volume	762
DOIs	https://doi.org/10.1016/j.msea.2019.138060
Publication status	Published - 2019 Aug 5
Externally published	Yes

Keywords

Auto-tempering
Friction stir welding
Martensite
Medium-carbon steel
Microtwins

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.msea.2019.138060

Cite this

@article{8b656cd450c8442fae628d5e5eeb1a52,

title = "Effects of carbon and chromium on microstructure evolution and mechanical properties of friction stir weldment in medium-carbon steel",

abstract = "The carbon and chromium contents significantly affected the microstructure evolution in the stir zones of medium-carbon steels during the friction stir welding (FSW). The stir zone of the 0.2%C–4%Cr steel has a high strength over 1.5 GPa with a good elongation of 30.3%, while the stir zones of the 0.4%C–2%Cr and 0.4%C–4%Cr steels had ultrahigh tensile strengths over 2 GPa with low elongation. Auto-tempered martensite is the main reason for the excellent balance of strength and ductility in the stir zone of 0.2%C–4%Cr steel.",

keywords = "Auto-tempering, Friction stir welding, Martensite, Medium-carbon steel, Microtwins",

author = "Chun Cheng and Kota Kadoi and Shun Tokita and Hidetoshi Fujii and Kohsaku Ushioda and Hiroshige Inoue",

note = "Funding Information: This study was supported by a future pioneering project commissioned by the New Energy and Industrial Technology Development Organization. Funding Information: This study was supported by a future pioneering project commissioned by the New Energy and Industrial Technology Development Organization . Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = aug,

day = "5",

doi = "10.1016/j.msea.2019.138060",

language = "English",

volume = "762",

journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

issn = "0921-5093",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Effects of carbon and chromium on microstructure evolution and mechanical properties of friction stir weldment in medium-carbon steel

AU - Cheng, Chun

AU - Kadoi, Kota

AU - Tokita, Shun

AU - Fujii, Hidetoshi

AU - Ushioda, Kohsaku

AU - Inoue, Hiroshige

N1 - Funding Information: This study was supported by a future pioneering project commissioned by the New Energy and Industrial Technology Development Organization. Funding Information: This study was supported by a future pioneering project commissioned by the New Energy and Industrial Technology Development Organization . Publisher Copyright: © 2019

PY - 2019/8/5

Y1 - 2019/8/5

N2 - The carbon and chromium contents significantly affected the microstructure evolution in the stir zones of medium-carbon steels during the friction stir welding (FSW). The stir zone of the 0.2%C–4%Cr steel has a high strength over 1.5 GPa with a good elongation of 30.3%, while the stir zones of the 0.4%C–2%Cr and 0.4%C–4%Cr steels had ultrahigh tensile strengths over 2 GPa with low elongation. Auto-tempered martensite is the main reason for the excellent balance of strength and ductility in the stir zone of 0.2%C–4%Cr steel.

AB - The carbon and chromium contents significantly affected the microstructure evolution in the stir zones of medium-carbon steels during the friction stir welding (FSW). The stir zone of the 0.2%C–4%Cr steel has a high strength over 1.5 GPa with a good elongation of 30.3%, while the stir zones of the 0.4%C–2%Cr and 0.4%C–4%Cr steels had ultrahigh tensile strengths over 2 GPa with low elongation. Auto-tempered martensite is the main reason for the excellent balance of strength and ductility in the stir zone of 0.2%C–4%Cr steel.

KW - Auto-tempering

KW - Friction stir welding

KW - Martensite

KW - Medium-carbon steel

KW - Microtwins

UR - http://www.scopus.com/inward/record.url?scp=85068216939&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85068216939&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2019.138060

DO - 10.1016/j.msea.2019.138060

M3 - Article

AN - SCOPUS:85068216939

SN - 0921-5093

VL - 762

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

M1 - 138060

ER -

Effects of carbon and chromium on microstructure evolution and mechanical properties of friction stir weldment in medium-carbon steel

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this