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alpha- to gamma-Al2O3 martensitic transformation induced by pulsed laser irradiation
Yan, P. F.1; Du, K.1; Sui, M. L.2
Corresponding AuthorDu, K.(kuidu@imr.ac.cn)
2010-06-01
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume58Issue:11Pages:3867-3876
AbstractA martensitic transformation from the a to the gamma phase of aluminum oxide was observed by transmission electron microscopy (TEM) upon rapid heating induced by pulsed laser irradiation. Two variants possessing a twin relationship were found in the product. High-resolution TEM reveals that the transformation is achieved via the glide of quarter partial dislocations on every other basal plane of alpha-Al2O3. The high thermal stress caused by pulsed laser irradiation is believed to be the main driving force of the phase transformation. This martensitic transformation is associated with a positive volume change and substantial shear strain. The overall shear strain could be minimized by the self-accommodating variants. These characteristics suggest potential application of the martensitic transformation for transformation toughening in ceramic materials. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
KeywordMartensitic phase transformation Ceramics High-resolution electron microscopy Twinning Alumina
Funding OrganizationChinese Academy of Science ; Cheung Kong Scholars Programme of China ; Natural Sciences Foundation of China ; Major State Basic Research Projects of China
DOI10.1016/j.actamat.2010.03.045
Indexed BySCI
Language英语
Funding ProjectChinese Academy of Science ; Cheung Kong Scholars Programme of China ; Natural Sciences Foundation of China[50601027] ; Major State Basic Research Projects of China[2009CB623700]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000278562800006
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/101025
Collection中国科学院金属研究所
Corresponding AuthorDu, K.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
Recommended Citation
GB/T 7714
Yan, P. F.,Du, K.,Sui, M. L.. alpha- to gamma-Al2O3 martensitic transformation induced by pulsed laser irradiation[J]. ACTA MATERIALIA,2010,58(11):3867-3876.
APA Yan, P. F.,Du, K.,&Sui, M. L..(2010).alpha- to gamma-Al2O3 martensitic transformation induced by pulsed laser irradiation.ACTA MATERIALIA,58(11),3867-3876.
MLA Yan, P. F.,et al."alpha- to gamma-Al2O3 martensitic transformation induced by pulsed laser irradiation".ACTA MATERIALIA 58.11(2010):3867-3876.
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