Ti–4.5Al–6.5Mo–2Cr–2.6Nb-2Zr-1Sn钛合金的高温变形行为

High temperature deformation behavior of Ti-4.5Al-6.5Mo-2Cr-2.6Nb-2Zr-1Sn titanium alloy

摘要:

超高强韧钛合金是制造超规格航空结构件的骨干材料。本文通过热模拟压缩实验研究了Ti–4.5Al–6.5Mo–2Cr–2.6Nb-2Zr-1Sn钛合金高温变形行为，采用临界条件动力学模型建立高温下动态再结晶体积分数预测模型。本研究取得的阶段性成果将为超大尺寸、复杂形状的关键结构件的集成制造提供有效的理论支撑。

Abstract:

Titanium alloys with high strength and toughness are the backbone material for manufacturing super-standard aeronautical structures. In present research, High temperature deformation behavior of the Ti-4.5Al-6.5Mo-2Cr-2.6Nb-2Zr-1Sn Ti-alloy has been investigated by thermal simulation compression experiment. The critical condition dynamic model was used to establish the prediction model of dynamic recrystallization volume fraction during hot deformation processing. The results obtained in this study will provide an effective theoretical support for the integrated manufacturing of key structural components with super-large size and complex shape.