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Microstructure and mechanical properties of Ni3Al and Ni3Al-1B alloys fabricated by SHS/HE
Guo, J. T.1; Sheng, L. Y.1,2,3; Xie, Y.1; Zhang, Z. X.3; Ovcharenko, V. E.4; Ye, H. Q.1
Corresponding AuthorGuo, J. T.(jtguo@imr.ac.cn)
2011-02-01
Source PublicationINTERMETALLICS
ISSN0966-9795
Volume19Issue:2Pages:137-142
AbstractThe well-densified Ni3Al alloys without and with boron addition were fabricated by self-propagation high-temperature synthesis and hot extrusion (SHS/HE) technology. Microstructure investigation showed that Ni3Al and Ni3Al-1B alloys contained fine grain structure. Analysis of X-ray spectra as well as transmission electron microscopy studies revealed that three phases present in all alloys: gamma-Ni, Ni3Al and dispersoids of alpha- Al2O3 and gamma- Al2O3. However, beta-NiAl, Ni3B phase and twinned Ni3Al crystal are observed in the Ni3Al-1B alloy. In addition, dislocations with high density exist in all alloys. The mechanical test showed that the B addition leads to obvious improvement in yield strength and compressive ductility, and compared with the ones synthesized by combustion, SHS/HE synthesized Ni3Al and Ni3Al-1B alloys exhibit more excellent mechanical properties. (C) 2010 Elsevier Ltd. All rights reserved.
KeywordNickel aluminides, based on Ni3Al Mechanical properties at ambient temperature Reaction synthesis Microstructure
DOI10.1016/j.intermet.2010.08.027
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000286294500003
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:35[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/106412
Collection中国科学院金属研究所
Corresponding AuthorGuo, J. T.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Peking Univ, Beijing 100871, Peoples R China
3.PKU HKUST Shenzhen HongKong Inst, Shenzhen 518057, Peoples R China
4.Russian Acad Sci, Inst Strength Phys & Mat Sci, Siberian Branch, Tomsk, Russia
Recommended Citation
GB/T 7714
Guo, J. T.,Sheng, L. Y.,Xie, Y.,et al. Microstructure and mechanical properties of Ni3Al and Ni3Al-1B alloys fabricated by SHS/HE[J]. INTERMETALLICS,2011,19(2):137-142.
APA Guo, J. T.,Sheng, L. Y.,Xie, Y.,Zhang, Z. X.,Ovcharenko, V. E.,&Ye, H. Q..(2011).Microstructure and mechanical properties of Ni3Al and Ni3Al-1B alloys fabricated by SHS/HE.INTERMETALLICS,19(2),137-142.
MLA Guo, J. T.,et al."Microstructure and mechanical properties of Ni3Al and Ni3Al-1B alloys fabricated by SHS/HE".INTERMETALLICS 19.2(2011):137-142.
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