Effects of Aging on Phase Constitution, Lattice Parameter and Mechanical Properties of Ti-4 mol%Au Near-Eutectoid Alloy

• Matsuki Yu

  Precision and Intelligence Laboratory, Tokyo Institute of Technology

• Inamura Tomonari

  Precision and Intelligence Laboratory, Tokyo Institute of Technology

• Wakashima Kenji

  Precision and Intelligence Laboratory, Tokyo Institute of Technology

• Hosoda Hideki

  Precision and Intelligence Laboratory, Tokyo Institute of Technology

Bibliographic Information

Other Title

• Effects of Aging on Phase Constitution Lattice Parameter and Mechanical Properties of Ti 4モルパーセントAu Near Eutectoid Alloy

Abstract

Effects of aging on phase constitution, lattice parameters and mechanical properties of Ti-4 mol%Au near-eutectoid alloy were investigated. The alloy was fabricated by Ar arc-melting method, followed by homogenization at 1273 K for 3.6 ks. The ingot was cold-rolled with 95% reduction in thickness, solution treated at 1173 K for 0.9 ks and quenched into ice water. It was found that the apparent phase after the solution treatment was a supersaturated solid solution of α (hcp) phase. This supersaturated α-phase is termed α_m, hereafter. The apparent phase of the aged alloys was α_m regardless of the aging temperature from 373 to 1073 K for 3.6 ks. The 0.2% flow stress was decreased as the aging temperature increased. On the other hand, by the isothermal aging at 973 K, Ti₃Au with A15 structure was formed and the volume fraction of Ti₃Au increased with increasing aging time. The 0.2% flow stress of the materials was decreased as the volume fraction of Ti₃Au increased. This indicates that the Ti₃Au precipitations are not effective on strengthening of the Ti-Au alloy.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 48 (3), 385-389, 2007

  The Japan Institute of Metals and Materials

Keywords

• titanium-gold
• near-eutectoid alloy
• aging
• phase constitution
• lattice parameter
• mechanical properties

Details

• CRID: 1390282679228023040
• NII Article ID: 130004453475
• NII Article ID: 10018734579
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.48.385
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 8670602
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8670602
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/48/3/48_MH200630/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed