간행물

한국열처리공학회> 열처리공학회지

열처리공학회지 update

Journal of the Korean Society for Heat Treatment

  • : 한국열처리공학회
  • : 공학분야  >  금속공학
  • : KCI등재
  • :
  • : 연속간행물
  • : 격월
  • : 1225-1070
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수록정보
수록범위 : 1권1호(1988)~31권2호(2018) |수록논문 수 : 1,365
열처리공학회지
31권2호(2018년 03월) 수록논문
최근 권호 논문
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KCI등재

1Al-4.0%Zn-1.5%Mg-0.9%Cu 합금의 압출, 압연 및 열처리에 따른 미세조직 변화

저자 : 권혁곤 ( Hyeok Gon Kwon ) , 박종문 ( Jong Moon Park ) , 오명훈 ( Myung Hoon Oh ) , 박노진 (

발행기관 : 한국열처리공학회 간행물 : 열처리공학회지 31권 2호 발행 연도 : 2018 페이지 : pp. 41-48 (8 pages)

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In this study, microstructural changes due to extrusion, rolling and heat treatment were studied to fabricate Al-4.0wt%Zn-1.5wt%Mg-0.9wt%Cu alloys with homogeneous microstructure suitable for metal cases of smart phones and electronic products fabricated through plastic working. After extrusion microstructure and texture were developed very differently on the surface and inside. Inside, coarse grains were formed and a strong Cube component orientation was developed. On the surface, a weak texture was developed with small grains. After 72% cold rolling the intensity of the Cube component orientation was lower, and uniform texture was developed in all the layers and the R-value was uniformly predicted. After recrystallization, the grain size difference between at the surface and the inside is smaller, when 72% rolling was performed, indicating that a uniform structure is formed. Texture develops almost randomly after recrystallization and exhibits uniform R-values at all layers. (Received January 19, 2018; Revised January 29, 2018; Accepted February 2, 2018)

KCI등재

2Ti-3Al-2.5V 튜브의 초소성 하이드로포밍과 확산접합으로 제조된 T형 구조물의 접합 특성 분석

저자 : 유영훈 ( Y. H. Yoo ) , 이상용 ( S. Y. Lee )

발행기관 : 한국열처리공학회 간행물 : 열처리공학회지 31권 2호 발행 연도 : 2018 페이지 : pp. 49-55 (7 pages)

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A T-shape structure was manufactured by the superplastic forming and diffusion bonding process using two Ti-3Al-2.5V alloy tubes. A Ti-3Al-2.5V tube was prepared for the hydroforming in the superplastic con-dition until it reaches a surface area such as a roof welded in the hole of another Ti-3Al-2.5V tube. Afterward, the superplastic forming process and the diffusion bonding process were carried out simultaneously until the appro-priate bonding along the interface area of two Ti-3Al-2.5V tubes was obtained. The bonding qualities were differ-ent at each location of the entire interface according to the applied process conditions such as strain, pressure, temperature, holding time, geometries, etc. The microstructures of bonding interface have been observed to understand the characteristics of the applied processes in this study. (Received January 25, 2018; Revised February 9, 2018; Accepted February 14, 2018)

KCI등재

3열처리조건에 따른 AZ61 마그네슘 합금의 미세조직과 감쇠능에 미치는 영향

저자 : 안재현 ( Jae-hyeon Ahn ) , 김권후 ( Kwon-hoo Kim )

발행기관 : 한국열처리공학회 간행물 : 열처리공학회지 31권 2호 발행 연도 : 2018 페이지 : pp. 56-62 (7 pages)

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Many researchers have studied on the precipitation control after solution treatment to improve the damping capacity without decreasing the strength. However, studies on the damping capacity and microstructure changes after deformation in the solid solution strengthening alloys were inadequate, such as the Al-Zn series magnesium alloys. Therefore, in order to investigate the effect of annealing condition on microstructure change and damping a capacity of AZ61 magnesium alloy. In this study, it was confirmed that the microstructure changes affect the damping capacity and hardness when annealed AZ61 alloy. AZ61 magnesium alloy was rolled at 400℃ with rolling reduction of 30%. These specimens were annealed at 350℃ to 450℃ for 30-180 minutes. After annealing, microstructure was observed by using optical microscopy, and damping capacity was measured by using internal friction measurement machine. Hardness was measured by Vickers hardness tester under a condition of 0.3 N. In this study, static recrystallization was observed regardless of the annealing conditions. In addition, uniform equiaxed grain structure was developed by annealing treatment. Hardness is decreased with increasing grain size. This is associated with Hall-Petch equation and static recrystallization. In case of damping capacity, bigger grain size show the larger damping capacity. (Received February 0, 2018; Revised March 0, 2018; Accepted March 0, 2018)

KCI등재

4포토 리소그래피 공정을 이용한 DLC 마이크로 패턴 원통 금형 제작

저자 : 하태규 ( T. G. Ha ) , 김정완 ( J. W. Kim ) , 이태동 ( T. D. Lee ) , 윤수종 ( S. J. Yoon ) ,

발행기관 : 한국열처리공학회 간행물 : 열처리공학회지 31권 2호 발행 연도 : 2018 페이지 : pp. 63-67 (5 pages)

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Recent mold industry uses many roll-to-roll processes that can produce high production speed and precision machining and automation process. In the circular cylinder mold, however, patterns of less than 10 μm are difficult to manufacture and maintain. In this study, we fabricated a circular cylindrical mold with a DLC thin film which have high hardness, low coefficient of friction and high releasability by using lithography and lift-off pro-cess. The height, line width, and pitch of the fabricated DLC macro pattern are 3.1 μm, 9.1 μm and 20.2 μm, respectively. The pattern size is finer than the current applied to the aluminum cylinder type, and this shows the possibility of practical use of DLC micro pattern roll mold. (Received February 28, 2018; Revised March 7, 2018; Accepted March 9, 2018)

KCI등재

5제 2 장. 침탄의 신개념

저자 : 손명진

발행기관 : 한국열처리공학회 간행물 : 열처리공학회지 31권 2호 발행 연도 : 2018 페이지 : pp. 68-75 (8 pages)

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KCI등재

6열처리 용어 해설(2)

저자 : 한국열처리공학회

발행기관 : 한국열처리공학회 간행물 : 열처리공학회지 31권 2호 발행 연도 : 2018 페이지 : pp. 76-78 (3 pages)

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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서울과학기술대학교(구 서울산업대학교) 전북대학교 한밭대학교 부산대학교 한국생산기술연구원
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