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<p>Titanium alloys are utilized in many industries, especially aerospace and biomedical fields, due to their excellent tensile strength, fatigue performance, fracture toughness, strength-to-weight ratio, and corrosion resistance. While previous studies have examined the tensile and fatigue properties of Ti6Al4V specimens built with virgin extra-low-interstitial (ELI) powder, the effect of utilizing once-recycled powder can be further investigated. This study examines the influence of heat treatment on the tensile, and fatigue properties of Ti6Al4V alloy fabricated through laser powder bed fusion using once-recycled (ELI) powder feedstock. The specimens were subject to four heat treatment protocols: as-built, hot isostatic pressing (HIP), HIP recipe at ambient pressure, and HIP followed by solution treatment and aging. Tensile testing, rotating beam fatigue, and metallography were subsequently performed on the samples.</p>

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Effect of Heat Treatment on Tensile and Fatigue Properties of Ti6Al4V Fabricated via Laser Powder Bed Fusion with Reused Powder Feedstock

  • 期刊论文

  • 发表日期：

    2025年2月27日

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  • Marc Sunga,
  • Punnathat Bordeenithikasem,
  • Stephen Sung,
  • Abigail Massar,
  • Arnav Akarte,
  • Anthony Orozco,
  • Xiaodong Sun,
  • Timothy Bremen,
  • Yong-Jun Li,
  • Michael T. Hahn,
  • Daniel P. Dennies,
  • Samad A. Firdosy,
  • Omar S. Es-Said

摘要

Titanium alloys are utilized in many industries, especially aerospace and biomedical fields, due to their excellent tensile strength, fatigue performance, fracture toughness, strength-to-weight ratio, and corrosion resistance. While previous studies have examined the tensile and fatigue properties of Ti6Al4V specimens built with virgin extra-low-interstitial (ELI) powder, the effect of utilizing once-recycled powder can be further investigated. This study examines the influence of heat treatment on the tensile, and fatigue properties of Ti6Al4V alloy fabricated through laser powder bed fusion using once-recycled (ELI) powder feedstock. The specimens were subject to four heat treatment protocols: as-built, hot isostatic pressing (HIP), HIP recipe at ambient pressure, and HIP followed by solution treatment and aging. Tensile testing, rotating beam fatigue, and metallography were subsequently performed on the samples.