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Variation of structure and mechanical properties of Ti–6Al–4V with isothermal hydrogenation treatment

✍ Scribed by C.C. Shen; C.Y. Yu; T.P. Perng

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
761 KB
Volume
57
Category
Article
ISSN
1359-6454

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✦ Synopsis

Grain refinement of Ti-6Al-4V (Ti64) was achieved by means of nucleation and growth of hydride phases associated with repeated isothermal hydrogenation (RIH). With a hydrogen loading of 0.7 H/M at 600 °C, a refined nanostructure ($50 nm) in the a matrix resulted mainly from the formation of platelet b H and d by the RIH treatment. The first cycle of RIH significantly increased the hardness and yield compressive stress, but further RIH cycling became less effective. For RIH with a hydrogen loading of 0.5 H/M at 750 °C, the refined structure was eliminated, and the compressive yield stress and microhardness of Ti64 were lowered.

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✍ O.O. Bilous; L.V. Artyukh; A.A. Bondar; T.Ya. Velikanova; M.P. Burka; M.P. Brodn 📂 Article 📅 2005 🏛 Elsevier Science 🌐 English ⚖ 768 KB

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