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1机械性能钛熔点1688℃,相变点温度885℃,相变温度以下为密排六方晶格的α相,相变温度以上为体心立方晶格的β相。比重4.54,为钢的60％左右,纵弹性系数10850~(Kg)/mm(2),是钢的1/2左右。钛及钛合金在极低温和高温下能进行显著的锯齿状变形。根据这样的特征,把钛合金的性能按其显微组织分为α相、α+β相及β相,并叙述温度对拉伸性能的影响。(1)钛合金的热处理
1 mechanical properties of titanium melting point of 1688 ° C, the phase transition temperature of 885 ° C, phase transition temperature below the dense hexagonal lattice α phase, phase transition temperature above the body-centered cubic lattice β-phase. The proportion of 4.54, about 60% of steel, the longitudinal elastic coefficient 10850 ~ (Kg) / mm (2), is about 1/2 of steel. Titanium and titanium alloys perform significant jagged deformation at very low temperatures and temperatures. According to such characteristics, the properties of titanium alloys are classified into α phase, α + β phase and β phase according to their microstructure, and the influence of temperature on the tensile properties is described. (1) heat treatment of titanium alloy