Effect of Heat Treatment Modes Under Phase Pre-Transformation Conditions on the Structure and Properties of Electron-Beam-Welded Joints of Titanium Alloy
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Abstract
The effect of heat treatment modes under conditions of phase pre-transformation on the structure and properties of electron-beam-welded joints of titanium alloy VT20 is investigated. It is shown that heat treatment at 980°C for 120 – 150 sec makes it possible to remove residual stresses and to increase the tensile strength of the welded joints to 1230 MPa, as well as to ensure a uniform chemical composition over the volume of the joints to meet the requirements of OST 1 90013–81. The suggested method of heat treatment may be used for local treatment of the heat affected zone and of the welded joint in air environment.
期刊介绍：
Metal Science and Heat Treatment presents new fundamental and practical research in physical metallurgy, heat treatment equipment, and surface engineering.
Topics covered include:
New structural, high temperature, tool and precision steels;
Cold-resistant, corrosion-resistant and radiation-resistant steels;
Steels with rapid decline of induced properties;
Alloys with shape memory effect;
Bulk-amorphyzable metal alloys;
Microcrystalline alloys;
Nano materials and foam materials for medical use.
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