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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.12
- 수록면
- 5,476 - 5,479 (4page)
- DOI
- 10.1007/s12540-020-00847-x
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초록· 키워드
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The discontinuous dynamic recrystallization (DDRX) nucleation process was investigated during the TMP of a nickel-basedsuperalloy with a coarse columnar-grain structure. Special attention was focused on the formation mechanism of the ‘newbornboundary’ which separates the free-strain volume from deformed grain. The special grain morphology and large grain sizerestrained the grain boundary sliding of the studied alloy, and hence made it difficult to form a subboundary through straininduction or twining to separate the free-strain volumes from the deformed grains. This is very different with the classicalDDRX theory, where the grain boundary sliding has less restraint and hence leads to grain boundary shearing and the followingstrain induced boundary or twin boundary. However, the experiment results showed that DDRX took place and developedwell during the studied deformation process with restrained grain boundary sliding. It was found that the ‘newborn boundary’,which separates the free-strain volume from deformed grain to close this area, was formed through dislocation piling-upand rearrangement instead of strain induction or twinning caused grain boundary shearing. Hence, a potential nucleationtheory was then proposed and discussed, which is expected to enrich the discontinuous dynamic recrystallization theory.
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참고문헌 (11)
참고문헌 신청
F.J. Humphreys / 2004 / Recrystallization and Related Annealing Phenomena / Elsevier :415~467
Zhanna Yanushkevich / 2015 / Microstructural evolution of a 304-type austenitic stainless steel during rolling at temperatures of 773–1273 K / Acta Materialia 82:244~254
Bingchao Xie / 2019 / DDRX and CDRX of an as-cast nickel-based superalloy during hot compression at γ′ sub-/super-solvus temperatures / Journal of Alloys and Compounds 803:16~29
Paul A. Beck / 1950 / Strain Induced Grain Boundary Migration in High Purity Aluminum / Journal of Applied Physics 21(2):150~152
A.M Wusatowska-Sarnek / 2002 / Nucleation and microtexture development under dynamic recrystallization of copper / Materials Science and Engineering: A 323(1-2):177~186
Zhanna Yanushkevich / 2015 / Microstructural evolution of a 304-type austenitic stainless steel during rolling at temperatures of 773–1273 K / Acta Materialia 82:244~254
Bingchao Xie / 2019 / DDRX and CDRX of an as-cast nickel-based superalloy during hot compression at γ′ sub-/super-solvus temperatures / Journal of Alloys and Compounds 803:16~29
Paul A. Beck / 1950 / Strain Induced Grain Boundary Migration in High Purity Aluminum / Journal of Applied Physics 21(2):150~152
A.M Wusatowska-Sarnek / 2002 / Nucleation and microtexture development under dynamic recrystallization of copper / Materials Science and Engineering: A 323(1-2):177~186
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