Effect of the initial hydrogen concentration and vacuum-annealing modes on the structure, phase composition, and mechanical properties of sheet billets of the VT6 alloy: Part 2. Effect of the phase composition and grain size on mechanical properties of sheet billets of the VT6 alloy

• Published in: Russian journal of non-ferrous metals Vol. 53; no. 6; pp. 465 - 470
• Main Authors: Nosov, V. K., Nesterov, P. A., Shchugorev, Yu. Yu, Polyakov, O. A., Grachev, N. A.
• Format: Journal Article
• Language: English
• Published: Heidelberg Allerton Press, Inc 01.11.2012; Springer Nature B.V
• Subjects: Alloy development; Alloying effects; Billets; Chemistry and Materials Science; Hardening; Materials Science; Mechanical properties; Metallic Materials; Nonferrous metals; Phase composition; Physical Metallurgy and Heat Treatment; Titanium base alloys; phase composition; VT6 titanium alloy; hardening mechanisms; reversible alloying by hydrogen; Hall-Petch relationship
• ISSN: 1067-8212; 1934-970X
• DOI: 10.3103/S1067821212060089

The effect of the size of the α grain and the phase composition on the mechanical properties of sheet billets of the VT6 alloy after hot rolling with the use of reversible alloying by hydrogen is investigated. To evaluate the contribution of various hardening mechanisms to the total hardening of the alloy, the Hall-Petch relationship σ y = σ i + k h d −1/2 is used. The possibility for its use to evaluate the intragrained and grain-boundary hardening of the VT6 α + β alloy in comparison with the Ti-6Al α alloy and commercial titanium is shown.