The Influence of Polygonized Structure on the Properties of Heat-Treated Beta Titanium Alloys
It has been shown in some papers that a polygonized structure in titanium beta alloys is formed after hot deformation. For example, a polygonized structure was obtained by upsetting the BT15 alloy at 860ºC with 50% reduction (1) and by extruding the Beta-III alloy at 760ºC.(2) The authors indicate a favorable effect of sub-grains on the mechanical properties of aged beta-alloys. However, up till now no systematic investigations of the effect of various deformation conditions (temperature, reduction in area) on the character of polygonized structure and its influence on mechanical properties of heat-treated alloys has been carried out.
KeywordsTitanium Alloy Habit Plane Select Area Diffraction Pattern Beta Titanium Alloy Electron Photomicrograph
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