DC Field | Value | Language |
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dc.contributor.author | Gan, W | - |
dc.contributor.author | Bong, H.J | - |
dc.contributor.author | Lim, H | - |
dc.contributor.author | Boger, R | - |
dc.contributor.author | BARLAT, FREDERIC GERARD | - |
dc.contributor.author | Wagoner, R.H | - |
dc.date.accessioned | 2018-05-04T02:41:50Z | - |
dc.date.available | 2018-05-04T02:41:50Z | - |
dc.date.created | 2018-02-26 | - |
dc.date.issued | 2017-01 | - |
dc.identifier.issn | 0921-5093 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/41295 | - |
dc.description.abstract | Wrought Al-Ge-Si alloys were designed and produced to ensure dislocation bypass strengthening ("hard pin" precipitates) without significant precipitate cutting/shearing ("soft pin" precipitates). These unusual alloys were processed from the melt, solution heat treated and aged. Aging curves at temperatures of 120, 160, 200 and 240 degrees C were established and the corresponding precipitate spacings, sizes, and morphologies were measured using TEM. The role of non-shearable precipitates in determining the magnitude of Bauschinger was revealed using large-strain compression/tension tests. The effect of precipitates on the Bauschinger response was stronger than that of grain boundaries, even for these dilute alloys. The Bauschinger effect increases dramatically from the under-aged to the peak aged condition and remains constant or decreases slowly through over-aging. This is consistent with reported behavior for Al-Cu alloys (maximum effect at peak aging) and for other Al alloys (increasing through over-aging) such as Al-Cu-Li, Al 6111, Al 2524, and Al 6013. The Al-Ge-Si alloy response was simulated with three microstructural models, including a novel SD (SuperDislocation) model, to reveal the origins of the Bauschinger effect in dilute precipitation-hardened / bypass alloys. The dominant mechanism is related to the elastic interaction of polarized dislocation arrays (generalized pile-up or bow-out model) at precipitate obstacles. Such effects are ignored in continuum and crystal plasticity models. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.relation.isPartOf | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | - |
dc.subject | WORK-HARDENING BEHAVIOR | - |
dc.subject | PLANE-STRAIN DEFORMATION | - |
dc.subject | ALUMINUM SINGLE-CRYSTALS | - |
dc.subject | IF STEEL | - |
dc.subject | PLASTIC ANISOTROPY | - |
dc.subject | INTERNAL-STRESSES | - |
dc.subject | AL-(SI,GE) ALLOYS | - |
dc.subject | HARDENING/SOFTENING BEHAVIOR | - |
dc.subject | DISLOCATION DENSITIES | - |
dc.subject | METALLIC MATERIALS | - |
dc.title | Mechanism of the Bauschinger effect in Al-Ge-Si Alloys | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.msea.2016.12.020 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.684, pp.353 - 372 | - |
dc.identifier.wosid | 000393938300044 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 372 | - |
dc.citation.startPage | 353 | - |
dc.citation.title | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | - |
dc.citation.volume | 684 | - |
dc.contributor.affiliatedAuthor | BARLAT, FREDERIC GERARD | - |
dc.identifier.scopusid | 2-s2.0-85007092536 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 1 | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | WORK-HARDENING BEHAVIOR | - |
dc.subject.keywordPlus | PLANE-STRAIN DEFORMATION | - |
dc.subject.keywordPlus | ALUMINUM SINGLE-CRYSTALS | - |
dc.subject.keywordPlus | IF STEEL | - |
dc.subject.keywordPlus | PLASTIC ANISOTROPY | - |
dc.subject.keywordPlus | INTERNAL-STRESSES | - |
dc.subject.keywordPlus | AL-(SI,GE) ALLOYS | - |
dc.subject.keywordPlus | HARDENING/SOFTENING BEHAVIOR | - |
dc.subject.keywordPlus | DISLOCATION DENSITIES | - |
dc.subject.keywordPlus | METALLIC MATERIALS | - |
dc.subject.keywordAuthor | Al-Ge-Si | - |
dc.subject.keywordAuthor | Bauschinger effect | - |
dc.subject.keywordAuthor | Precipitate | - |
dc.subject.keywordAuthor | Orowan bypass | - |
dc.subject.keywordAuthor | Super-Dislocation model | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
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