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Strain-path control...
Strain-path controlled microstructure, texture and hardness evolution in cryo-deformed AlCoCrFeNi2.1 eutectic high entropy alloy
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- Patel, A. (author)
- Indian Institute of Technology
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- Wani, I. S. (author)
- Indian Institute of Technology
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- Reddy, S. R. (author)
- Indian Institute of Technology
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- Narayanaswamy, S. (author)
- Indian Institute of Technology
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- Lozinko, Adrianna, 1992 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Saha, R. (author)
- Tata Steel
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- Guo, Sheng, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Bhattacharjee, P. P. (author)
- Indian Institute of Technology
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(creator_code:org_t)
- Elsevier BV, 2018
- 2018
- English.
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In: Intermetallics. - : Elsevier BV. - 0966-9795. ; 97, s. 12-21
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https://doi.org/10.1...
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Abstract
Subject headings
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- The effect of strain path on microstructure, texture and hardness properties of AlCoCrFeNi 2.1 eutectic high entropy alloy containing ordered FCC (L1 2 ) and ordered BCC (B2) was investigated. The EHEA was cryo-rolled using UCR, MSCR (during which the samples were rotated by 90° around the ND between each pass) and TSCR(45°) (in which the samples were deformed by unidirectional rolling to half of the total strain and then diagonally rolled for rest half of the strain). The UCR processed material showed a rather heterogeneous microstructure. The textures of the L1 2 /FCC and B2 phases in the MSCR processed material agreed with the cross-rolling texture of the corresponding single phase materials, while the texture of the two phases in the TSCR(45°) processed materials appeared rather weak. Upon annealing at 800 °C, the UCR processed materials showed a novel heterogeneous microstructure, while the MSCR and TSCR(45°) processed materials revealed microduplex structure. The heterogeneous microstructure was replaced by the usual microduplex structure at higher annealing temperatures. The annealing texture of the L1 2 /FCC phase showed the presence of α-fiber (ND// < 011 > ) components while the B2 phase showed strong ND-fiber (ND// < 111 > ) components. The UCR processed material with novel heterogeneous microstructure showed much greater hardness as compared to the MSCR and TSCR(45°) processed materials. The present results indicate that strain path exerted significant influence in controlling microstructure, texture and hardness properties of EHEA.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Polymerteknologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Polymer Technologies (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Keyword
- Cryo-rolling
- High entropy alloys
- Microstructure
- Strain path
- Hardness
- Texture
Publication and Content Type
- art (subject category)
- ref (subject category)
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