Improvement in tensile properties of α+β type Ti alloys by hydrogen treatment

Bo Gong, Mitsuo Niinomi, Toshiro Kobayashi

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


A new process to refine the microstructure of α+β type Ti alloys was developed by using hydrogen as a temporary alloying element. It involves hydrogenating the alloys below the hydrogenated β transus temperature about 0-40K, air cooling to room temperature and then dehydrogenating at 948 K. Ti-6Al-4V and Ti-5Al-2.5Fe alloys treated by this new process show much refined microstructure, and the yield strength, ultimate strength as well as the elongation increase 8-15, 5-13 and 7-14% respectively.

Original languageEnglish
Pages (from-to)121-124
Number of pages4
JournalActa Metallurgica Sinica Series A, Physical Metallurgy & Materials Science
Volume6 A
Issue number2
Publication statusPublished - 1993 Mar 1

ASJC Scopus subject areas

  • Engineering(all)


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