음향재료신호를 이용한 강소성변형된 알루미늄 5052 합금의 탄성계수 측정Determination of Elastic Modulus of Equal-Channel-Angular-Pressed Aluminum 5052 Alloy by Acoustic Material Signature
- Other Titles
- Determination of Elastic Modulus of Equal-Channel-Angular-Pressed Aluminum 5052 Alloy by Acoustic Material Signature
- Authors
- 김정석; 장경영; Miyasaka, Chiaki; 박익근
- Issue Date
- Apr-2010
- Publisher
- 한국비파괴검사학회
- Keywords
- 탄성계수; Al5052; 강소성변형; 음향현미경; 음향재료신호; Elastic Modulus; Al 5052; Equal Channel Angular Pressing; Acoustic Microscope; Acoustic Material Signature
- Citation
- 비파괴검사학회지, v.30, no.2, pp 146 - 154
- Pages
- 9
- Indexed
- KCI
- Journal Title
- 비파괴검사학회지
- Volume
- 30
- Number
- 2
- Start Page
- 146
- End Page
- 154
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/175093
- ISSN
- 1225-7842
2287-402X
- Abstract
- 알루미늄 5052 합금의 탄성특성에 대한 ECAP 강소성변형과 어닐링효과를 연구하였다. 알루미늄 5052 합금은 용체화 처리 후 ECAP 가공하고 어닐링처리를 수행하였다. 탄성계수는 기존의 인장시험과 나노압입시험을 통해 측정하고 음향현미경의 음향재료신호를 이용하여 시료의 표면에서 탄성계수를 측정하였다. 기존의 시험법으로는 불가능한 소성변형과 열처리에 따른 탄성계수의 변화를 음향재료신호를 이용하여 성공적으로 측정하였고 개개의 결정립에서도 결정방위에 의존하는 탄성계수를 얻었다.
The effects of severe plastic deformation, equal channel angular pressing, and annealing of Al 5052 alloy on elastic modulus have been studied. The Al 5052 alloy was plastically deformed by ECAP method after solution treatment, and then finally annealing heat treated. Elastic modulus was measured by conventional tensile and nano-indentation test, and also measured on the surface of the specimen using acoustic material signature of the acoustic microscope. The variation in the elastic modulus influenced by plastic deformation and heat treatment, inaccessible by the conventional techniques, was successfully measured by acoustic material signature and obtained the elastic modulus depending on crystal orientation at each grain.
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