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Effect of Nb addition and Pre-strain on Hydrogen Embrittlement of Low-carbon Steels with Ferrite-pearlite Structure
페라이트-펄라이트 조직 저탄소강의 수소 취성에 미치는 Nb 첨가와 예비 변형의 영향
Seok-Woo Ko, Ji-Min Lee, Byoungchul Hwang
고석우, 이지민, 황병철
Korean J. Met. Mater. 2020;58(11):752-758.   Published online 2020 Oct 15
DOI: https://doi.org/10.3365/KJMM.2020.58.11.752

Abstract
The effect of pre-strain on the hydrogen embrittlement of Nb-free and Nb-added low-carbon steels with ferrite-pearlite structure was investigated in this study. After the steels were electrochemically charged with hydrogen, slow-strain rate tensile (SSRT) tests were conducted on them to examine hydrogen embrittlement behavior. The SSRT test results revealed that..... More

                        
Effect of Pre-Straining on the High-Cycle Fatigue Properties of Hot-Rolled Steel Sheets for Automotive Structural Uses
자동차 구조용 열연강판의 고주기 피로 특성에 미치는 전변형 효과
Dong-Woog Ha, Chang-Yeol Jeong
하동욱, 정창열
Korean J. Met. Mater. 2018;56(3):177-186.   Published online 2018 Mar 6
DOI: https://doi.org/10.3365/KJMM.2018.56.3.177

Abstract
The drive towards weight reduction in the automotive industry has led to the use of high strength steel sheets for structural applications. Pressing and stamping are important processes in automotive production and result in additional straining on the vehicle body and chassis sheet material. It is therefore important to have..... More

      
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