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Article: Analysis of dissipation of a burst-type martensite transformation in a Fe-Mn alloy by internal friction measurements

TitleAnalysis of dissipation of a burst-type martensite transformation in a Fe-Mn alloy by internal friction measurements
Authors
KeywordsPhysics
Issue Date1996
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B (Condensed Matter), 1996, v. 54 n. 10, p. 7074-7083 How to Cite?
AbstractRecently, we have proposed a theory to analyze the first-order phase transition (FOPT) in solids. In order to test the concept of the physics of dissipation during FOPT in solids, it is necessary to test the theory with different FOPT system. We study here a burst-type martensite transformation in a Fe-18.8% Mn alloy sample for this purpose. We investigate the characteristics of γ(fcc)⇌ɛ(hcp) transformation in this alloy and measure the dependence of internal friction (IF) during γ/ɛ transformation in varying rate of temperature Ṫ and vibration frequency ω. For free oscillations, the IF was defined to be Qδ-1=δ/π where δ is the logarithmic decrement. For general (forced) oscillations, IF is usually defined to be Qw-1=(1/2π)(ΔW/W), where ΔW is the dissipation over one cycle, while W is the maximum stored energy. During our analysis, the relation between Qδ-1 and Qw-1 is deduced. The parameter l (coupling factor between phase interface and oscillating stress) takes a small value (0.015–0.035) during PT, but takes a large value (0.86) during static state. The parameter n (exponent of rate for effective PT driving force) takes a large value 0.33 during heating and 0.47 during cooling. The physical meaning of n and l is discussed. The methodology introduced here appears to be an effective way of studying FOPT in solids. © 1996 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/43174
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorFung, PCWen_HK
dc.contributor.authorZhang, JXen_HK
dc.contributor.authorLin, Yen_HK
dc.contributor.authorLiang, KFen_HK
dc.contributor.authorLin, ZCen_HK
dc.date.accessioned2007-03-23T04:40:42Z-
dc.date.available2007-03-23T04:40:42Z-
dc.date.issued1996en_HK
dc.identifier.citationPhysical Review B (Condensed Matter), 1996, v. 54 n. 10, p. 7074-7083en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43174-
dc.description.abstractRecently, we have proposed a theory to analyze the first-order phase transition (FOPT) in solids. In order to test the concept of the physics of dissipation during FOPT in solids, it is necessary to test the theory with different FOPT system. We study here a burst-type martensite transformation in a Fe-18.8% Mn alloy sample for this purpose. We investigate the characteristics of γ(fcc)⇌ɛ(hcp) transformation in this alloy and measure the dependence of internal friction (IF) during γ/ɛ transformation in varying rate of temperature Ṫ and vibration frequency ω. For free oscillations, the IF was defined to be Qδ-1=δ/π where δ is the logarithmic decrement. For general (forced) oscillations, IF is usually defined to be Qw-1=(1/2π)(ΔW/W), where ΔW is the dissipation over one cycle, while W is the maximum stored energy. During our analysis, the relation between Qδ-1 and Qw-1 is deduced. The parameter l (coupling factor between phase interface and oscillating stress) takes a small value (0.015–0.035) during PT, but takes a large value (0.86) during static state. The parameter n (exponent of rate for effective PT driving force) takes a large value 0.33 during heating and 0.47 during cooling. The physical meaning of n and l is discussed. The methodology introduced here appears to be an effective way of studying FOPT in solids. © 1996 The American Physical Society.en_HK
dc.format.extent251856 bytes-
dc.format.extent27136 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B (Condensed Matter). Copyright © American Physical Society.en_HK
dc.subjectPhysicsen_HK
dc.titleAnalysis of dissipation of a burst-type martensite transformation in a Fe-Mn alloy by internal friction measurementsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0163-1829&volume=54&issue=10&spage=7074&epage=7083&date=1996&atitle=Analysis+of+dissipation+of+a+burst-type+martensite+transformation+in+a+Fe-Mn+alloy+by+internal+friction+measurementsen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.54.7074en_HK
dc.identifier.hkuros20489-
dc.identifier.isiWOS:A1996VH08200045-

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