Surface Hardening of Ti-15V-3Al-3Cr-3Sn Alloy after Cyclic Hydrogenation and Subsequent Solution Treatment

The as-received and preheated (1000°C-30 min. and 500°C-30 min.) sheets of Ti-15V-3Al-3Cr-3Sn alloy (Ti-153) were treated according to the predetermined process including a cyclic electrolytic hydrogenation (at 50 mA/cm2 for 1 hr and at 5 mA/cm2 for 10 hrs) combining a subsequent solution treatment...

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Bibliographic Details
Published in:Advances in materials science and engineering 2014-01, Vol.2014 (2014), p.1-9
Main Authors: Hung, Chia-Po, Wu, Jiann-Kuo, Wu, Tair-I
Format: Article
Language:English
Subjects:
Annealing
Elevation
Evolution
Hardness
Heat treating
Hydrogenation
Mechanical properties
Microstructure
Precipitation hardening
Solid solutions
Solution heat treatment
Solution strengthening
Titanium alloys
Titanium base alloys
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Summary:The as-received and preheated (1000°C-30 min. and 500°C-30 min.) sheets of Ti-15V-3Al-3Cr-3Sn alloy (Ti-153) were treated according to the predetermined process including a cyclic electrolytic hydrogenation (at 50 mA/cm2 for 1 hr and at 5 mA/cm2 for 10 hrs) combining a subsequent solution treatment to see the effects of various operating parameters on the evolution of microstructure and the variations of hardness. The hardening effect deriving from solid-solution strengthening of hydrogen eventually overrode that from precipitation hardening. The maximum hardness elevation was from 236.9 to 491.1 VHN.
ISSN:1687-8434
1687-8442
DOI:10.1155/2014/160258