Fracture Toughness of Powder Metallurgy and Ingot Titanium Alloys – A Review

Abstract:

Powder metallurgy (PM) is potentially capable of producing homogeneous titanium alloys at relative low cost compared to ingot metallurgy (IM). There are many established PM methods for consolidating metal powders to near net shapes with a high degree of freedom in alloy composition and resulting microstructural characteristics. The mechanical properties of titanium and its alloys processed using a powder metallurgical route have been studied in great detail; one major concern is that ductility and toughness of materials produced by a PM route are often lower than those of corresponding IM materials. The aim of this paper is to review the fracture toughness of both PM and IM titanium alloys. The effects of critical factors such as interstitial impurities, microstructural features and heat treatment on fracture toughness are also discussed

• Periodical: Key Engineering Materials (Volume 551)
• Pages: 143-160
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.551.143
• Online since: May 2013
• Authors: Ajit Pal Singh, Brian Gabbitas, De Liang Zhang
• Keywords: Fracture Toughness, Heat Treatment Process, Interstitial Impurity, Mechanical Property, Microstructure, Powder Metallurgy Process, Titanium Alloy

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