Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/85977
Type: Artigo de periódico
Title: Mechanical Properties And Fracture Behavior Of Directionally Solidified Nial-v Eutectic Composites
Author: Milenkovic S.
Caram R.
Abstract: Directional solidification of eutectic alloys has been recognized as promising technique for producing in situ composite materials exhibiting balance of properties. Therefore, an in situ NiAl-V eutectic composite has been successfully directionally solidified using Bridgman technique. The mechanical behavior of the composite including fracture resistance, microhardness, and compressive properties at room and elevated temperatures was investigated. Damage evolution and fracture characteristics were also discussed. The obtained results indicate that the NiAl-V eutectic retains high yield strength up to 1073 K (800 °C), above which there is a rapid decrease in strength. Its yield strength is higher than that of binary NiAl and most of the NiAl-based eutectics. The exhibited fracture toughness of 28.5 MPa√m is the highest of all other NiAl-based systems investigated so far. The material exhibited brittle fracture behavior of transgranular type and all observations pointed out that the main fracture micromechanism was cleavage.
Editor: Springer Boston
Rights: aberto
Identifier DOI: 10.1007/s11661-014-2427-6
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84920707829&partnerID=40&md5=415aa70497c127ed39b1db35423e3cc4
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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