Microstructural optimization through heat treatment for enhancing the fracture toughness and fatigue crack growth resistance of selective laser melted Ti–6Al–4V alloy

• Main Authors: Kumar, Punit, Ramamurty, Upadrasta
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2021
• Subjects: Engineering::Mechanical engineering; Mechanical Properties; Titanium Alloy
• Online Access: https://hdl.handle.net/10356/150305
• Institution: Nanyang Technological University

The yield strength (σᵧ) of Ti–6Al–4V alloy, additively manufactured via selective laser melting (SLM) of powder beds, can exceed 1000 MPa while possessing a mode I fracture toughness (Kιc) of ∼50 MPa√m. The possibility of enhancing Kιc as well as fatigue crack growth resistance, without a significan...