CAJ | 학술논문

为实现Cu‐Be‐Co合金连续挤压的数值模拟和制定合理的热成形工艺参数，采用Gleeble‐1500D热模拟机对Cu‐Be‐Co合金在变形温度为450℃～850℃和应变速率为0.1 s－1～10 s－1条件下的热变形行为进行研究；分析热压缩对合金组织的影响；根据Arrhenius方程对实验数据进行分析，建立Cu‐Be‐Co合金热变形本构方程。结果表明， Cu‐Be‐Co合金热变形的流变应力随应变速率的降低和变形温度的升高而减小，并且Cu‐Be‐Co合金在高温变形条件下发生动态再结晶。
위실현Cu‐Be‐Co합금련속제압적수치모의화제정합리적열성형공예삼수，채용Gleeble‐1500D열모의궤대Cu‐Be‐Co합금재변형온도위450℃～850℃화응변속솔위0.1 s－1～10 s－1조건하적열변형행위진행연구；분석열압축대합금조직적영향；근거Arrhenius방정대실험수거진행분석，건립Cu‐Be‐Co합금열변형본구방정。결과표명， Cu‐Be‐Co합금열변형적류변응력수응변속솔적강저화변형온도적승고이감소，병차Cu‐Be‐Co합금재고온변형조건하발생동태재결정。
To achieve the numerical simulation of Cu‐Be‐Co alloy continuous extrusion and to develop a reasonable thermoforming parameters ,the thermal deformation behaviors of Cu‐Be‐Co alloy were studied at deformation temperatures of 450℃ ~ 850℃ and strain rates of 0.1s-1 ~ 10s-1 by using Gleeble‐1500D thermal simulation machine ;The effects of hot compression on the micro‐structure were analyzed ;The constitutive equation of Cu‐Be‐Co alloy hot deformation was established by using the Arrhenius e‐quation ;The results showed that the flow stress of Cu‐Be‐Co alloy is reduced with the reducing of the strain rate and the rising of the deformation temperature ,and the dynamic recrystallization occurs for Cu‐Be‐Co alloy under high temperature conditions .