Effect of minor boron addition on the fatigue strength and high temperature properties of injection molded Ti-6Al-4V compacts

Jungho Choe, Toshiko Osada, Kentaro Kudo, Fujio Tsumori, Hideshi Miura

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Ti-6Al-4V alloy has attracted a lot of attention from the automotive and aerospace industries because of their outstanding specific strength and corrosion resistance. On the other hand, Ti-6Al-4V alloy has normally poor workability because of the low thermal conductivity and the low elastic modulus. Metal injection molding (MIM) process is expected to manufacture a complex part with near net shape and reduce the manufacturing cost. However, Ti-6Al-4V alloy compacts by MIM process had a problem of low fatigue strength compared to wrought material. In this study, we tried to add a minor amount of boron using TiB2 powder for improving the fatigue strength. Addition of boron resulted refinement of the grain size of lamellar structure, which lead to increase the high cycle fatigue strength and fatigue limit. In addition, tensile properties at high temperature was investigated.

Original languageEnglish
Pages (from-to)451-456
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume63
Issue number7
DOIs
Publication statusPublished - Jan 1 2016

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Effect of minor boron addition on the fatigue strength and high temperature properties of injection molded Ti-6Al-4V compacts'. Together they form a unique fingerprint.

Cite this