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Experimental and th...
Experimental and theoretical investigations on the phase stability and mechanical properties of Cr7Mn25Co9Ni23Cu36 high-entropy alloy
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- Qin, Gang (författare)
- KTH,Materialvetenskap,Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China.
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- Chen, Ruirun (författare)
- Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China.;Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China.
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- Mao, Huahai, 1971- (författare)
- KTH,Materialvetenskap,Thermocalc Software
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- Yan, Yan (författare)
- Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China.
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- Li, Xiaojie (författare)
- KTH,Egenskaper
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- Schönecker, Stephan (författare)
- KTH,Materialvetenskap
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- Vitos, Levente (författare)
- KTH,Materialvetenskap,Tillämpad fysik
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- Li, Xiaoqing (författare)
- KTH,Egenskaper
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(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- Engelska.
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Ingår i: Acta Materialia. - : Elsevier BV. - 1359-6454 .- 1873-2453. ; 208
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Understanding the mechanisms of phase formation and their influence on the mechanical behavior is crucial for materials used in structural applications. Here, the phase decomposition under heat treatment in the Cr7Mn25Co9Ni23Cu36 (atomic percentage) high-entropy alloy and how secondary phases formed affect its tensile mechanical response are reported. The microstructural analysis shows that heat treatment at 800 degrees C /2 h and 600 degrees C /8 h led to the formation of sigma phase, but the sigma phase was not observed for 2 h heat treatment at 600 degrees C and below. The experimentally observed thermal stability and phases are compared to the calculated phase diagram and rationalized by recourse to thermodynamics and kinetics. The mechanism of phase decomposition is discussed based on ab initio calculations, indicating that decomposition into two solid solution phases is energetically preferred over a single solid solution phase with nominal composition.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- High-entropy alloys
- Sigma phase
- Heat treatment
- Phase diagram calculation
- Ab initio calculations
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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