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Effect of Microstructure Control on the Mechanical Properties of Hot Worked TiAl Alloy
열간가공된 TiAl 합금의 미세조직 제어가 기계적 특성에 미치는 영향
Jong-hun Kim, Jae-Kwon Kim, Seong-Woong Kim, Yong-Ho Park, Seung Eon Kim
김종훈, 김재권, 김성웅, 박용호, 김승언
Korean J. Met. Mater. 2020;58(7):459-465.   Published online 2020 Jul 5
DOI: https://doi.org/10.3365/KJMM.2020.58.7.459

The microstructure and mechanical properties of a newly developed, β-phase containing TiAl alloy have been studied through hot working and post heat treatment to enhance room temperature ductility and strength. The controlled microstructures hadthree types of structure, fully lamellar, nearly lamellar and duplex, and were produced by cyclic heat-treatment in..... More

                           Cited By 2
Effects of Manufacturing Conditions on Tensile Fracture Behaviors in Hyper-Eutectoid Steel Wires
과공석 강선에서 공정조건이 인장파단 거동에 미치는 영향
Kang Suk An, Jung Hoon Park, Won Jong Nam
안강석, 박정훈, 남원종
Korean J. Met. Mater. 2018;56(3):187-196.   Published online 2018 Mar 6
DOI: https://doi.org/10.3365/KJMM.2018.56.3.187

This study investigated the effects of manufacturing conditions, such as patenting temperature and drawing strains, on the tensile fracture behaviors, especially on reduction of area (RA), of hyper-eutectoid steel wire. Steel wires with the chemical compositions of Fe-0.92C-1.3Si-0.6Mn-0.3Cr (wt%), were austenitized at 900 °C for 3 min and isothermally transformed..... More

A Study on the Variation in Tensile Ductility of Porous Sintered Iron
다공성 소결 순철에서 인장연성의 변화에 관한 연구
Jae-Young Jung, Ho-Sang Sohn
정재영, 손호상
Korean J. Met. Mater. 2018;56(1):34-39.   Published online 2018 Jan 1
DOI: https://doi.org/10.3365/KJMM.2018.56.1.34

A model based on Irwin's approach to elastic-plastic deformation was applied to predict the tensile ductility of a sintered iron. The evaluation of this model using experimental results for porous sintered iron showed that tensile ductility depends not only on the pore volume fraction, but also the pore size and..... More

Hydrogen Embrittlement of Three High-Manganese Steels Tested by Different Hydrogen Charging Methods
수소 주입 방식에 따른 세 고망간강의 수소 취화 거동 비교
Seung-Yong Lee, Byoungchul Hwang
이승용, 황병철
Korean J. Met. Mater. 2017;55(10):695-702.   Published online 2017 Sep 28
DOI: https://doi.org/10.3365/KJMM.2017.55.10.695

In this study the hydrogen embrittlement characteristics of three high-manganese steels were tested using different hydrogen charging methods, and the results were compared with various Mn-containing steels. The results showed that the hydrogen embrittlement susceptibility of the high-manganese steels increased with increasing inherent strength because deformation mechanisms, such as deformation..... More

Enhanced Mechanical Properties by Directional Solidification and Cold Drawing in Cu Added Zn-Al Alloys
Cu가 첨가된 Zn-Al 합금에서 일방향응고 및 냉간인발에 따른 기계적 특성 향상
Hae Chang Jeong, Min Soo Kim, Jee Hyuk Ahn, Sung Hwan Lim, Seung Zeon Han, Jehyun Lee, Kwang Ho Kim
정해창, 김민수, 안지혁, 임성환, 한승전, 이재현, 김광호
Korean J. Met. Mater. 2017;55(8):529-536.   Published online 2017 Aug 1
DOI: https://doi.org/10.3365/KJMM.2017.55.8.529

The lamellar structure of two phases, the Zn-rich and Al-rich phases, is formed in a Zn-5 wt% Al eutectic alloy. In order to study the effect of microstructural changes on the tensile properties of eutectic Zn-Al binary alloy, Zn-Al and Zn-Al-Cu alloys were directionally solidified at a growth rate of..... More

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