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Can experiment dete...
Can experiment determine the stacking fault energy of metastable alloys?
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- Sun, Xun (författare)
- Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China,Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.;Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden
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- Lu, Song (författare)
- KTH,Egenskaper,Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden
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- Xie, Ruiwen (författare)
- KTH,Materialvetenskap,Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden
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- An, Xianhai (författare)
- School of Aerospace, Mechanical & Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia,Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia
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- Li, Wei, 1989- (författare)
- KTH,Materialvetenskap,Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden
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- Zhang, Tianlong (författare)
- Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China,Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
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- Liang, Chuanxin (författare)
- Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China,Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
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- Ding, Xiandong (författare)
- Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China,Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
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- Wang, Yunzhi (författare)
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA,Ohio State Univ, Dept Mat Sci & Engn, 2041 Coll Rd, Columbus, OH 43210 USA
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- Zhang, Hualei (författare)
- Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China,Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
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- Vitos, Levente (författare)
- Uppsala universitet,Materialteori,Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden; Wigner Res Ctr Phys, Res Inst Solid State Phys & Opt, POB 49, H-1525 Budapest, Hungary
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Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China;Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden (creator_code:org_t)
- Elsevier Ltd, 2021
- 2021
- Engelska.
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Ingår i: Materials & design. - : Elsevier Ltd. - 0264-1275 .- 1873-4197. ; 199
- Relaterad länk:
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https://doi.org/10.1...
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Stacking fault energy (SFE) plays an important role in deformation mechanisms and mechanical properties of face-centered cubic (fcc) metals and alloys. In many concentrated fcc alloys, the SFEs determined from density functional theory (DFT) calculations and experimental methods are found having opposite signs. Here, we show that the negative SFE by DFT reflects the thermodynamic instability of the fcc phase relative to the hexagonal close-packed one; while the experimentally determined SFEs are restricted to be positive by the models behind the indirect measurements. We argue that the common models underlying the experimental measurements of SFE fail in metastable alloys. In various concentrated solid solutions, we demonstrate that the SFEs obtained by DFT calculations correlate well with the primary deformation mechanisms observed experimentally, showing a better resolution than the experimentally measured SFEs. Furthermore, we believe that the negative SFE is important for understanding the abnormal behaviors of partial dislocations in metastable alloys under deformation. The present work advances the fundamental understanding of SFE and its relation to plastic deformations, and sheds light on future alloy design by physical metallurgy.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
Nyckelord
- Martensitic transformation
- Metastable alloy
- Stacking fault energy
- Twinning
- Deformation
- Density functional theory
- Design for testability
- Metallurgy
- Deformation mechanism
- Experimental methods
- Face-centered-cubic (fcc) metals
- Hexagonal close packed
- Indirect measurements
- Partial dislocations
- Stacking fault energies
- Thermodynamic instability
- Stacking faults
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Sun, Xun
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Lu, Song
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Xie, Ruiwen
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An, Xianhai
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Li, Wei, 1989-
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Zhang, Tianlong
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visa fler...
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Liang, Chuanxin
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Ding, Xiandong
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Wang, Yunzhi
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Zhang, Hualei
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Vitos, Levente
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- Om ämnet
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Materialteknik
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och Metallurgi och m ...
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Den kondenserade ...
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Materialteknik
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och Annan materialte ...
- Artiklar i publikationen
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Materials & desi ...
- Av lärosätet
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Kungliga Tekniska Högskolan
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Uppsala universitet