{"title":"The microstructure of extruded ingots of Ni3Al containing boron","authors":"V. Zinoviev , E.M. Schulson, I. Baker","doi":"10.1016/0026-0800(88)90003-1","DOIUrl":null,"url":null,"abstract":"<div><p>An investigation of the microstructure of extruded ingots of Ni<sub>3</sub>Al containing boron (0.05, 0.09, 0.19, 0.37, 0.75, and 1.12 at.%) has been performed. The material had a nonuniform grain size and was heavily flawed (cracks, porosity). Porosity is attributed to localized melting as observed from the presence of a nodular structure within pores, while cracks are most likely due to the lack of plastic flow during the extrusion. In some alloys, after the second extrusion, a bimodal grain size was observed, which was probably caused by differing amounts of plastic strain during the extrusion.</p></div>","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"21 4","pages":"Pages 391-398"},"PeriodicalIF":0.0000,"publicationDate":"1988-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0026-0800(88)90003-1","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metallography","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0026080088900031","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
An investigation of the microstructure of extruded ingots of Ni3Al containing boron (0.05, 0.09, 0.19, 0.37, 0.75, and 1.12 at.%) has been performed. The material had a nonuniform grain size and was heavily flawed (cracks, porosity). Porosity is attributed to localized melting as observed from the presence of a nodular structure within pores, while cracks are most likely due to the lack of plastic flow during the extrusion. In some alloys, after the second extrusion, a bimodal grain size was observed, which was probably caused by differing amounts of plastic strain during the extrusion.
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