【摘要】：采用正交試驗(yàn)方法,研究了不同熱處理制度對(duì)TC4鈦合金厚板顯微組織和力學(xué)性能的影響。結(jié)果表明,固溶溫度對(duì)合金顯微組織、室溫拉伸強(qiáng)度、塑性和斷裂韌性影響很大。相變點(diǎn)下固溶時(shí)合金組織為雙態(tài)組織,相變點(diǎn)上固溶時(shí)合金組織為魏氏組織;當(dāng)固溶溫度從975℃相變點(diǎn)下增加到1045℃相變點(diǎn)上時(shí)合金的強(qiáng)度變化不大,合金的塑性大幅下降,而合金的斷裂韌性逐漸升高;TC4鈦合金厚板在975℃/10 min+670℃/1 h熱處理,可獲得最佳強(qiáng)度-塑性匹配,在995℃固溶處理,670~760℃時(shí)效處理可獲得最佳強(qiáng)度-韌性匹配。
[Abstract]:The effects of different heat treatment conditions on the microstructure and mechanical properties of TC4 titanium alloy thick plate were studied by orthogonal test. The results show that the solution temperature has great influence on microstructure, tensile strength at room temperature, plasticity and fracture toughness. At the transformation point, the microstructure of the alloy is two-state structure, and the microstructure of the alloy is Weichen structure when the solution temperature is increased from 975 鈩，

本文編號(hào)：2172173