Al<sub>2</sub>O<sub>3</sub>弥散强化铜合金轧制性能试验研究

Al₂O₃弥散强化铜合金轧制性能试验研究

详细信息

摘要: 通过热模拟试验机对Al₂O₃弥散强化铜合金在不同温度、不同应变速率、相同变形量条件下进行热压缩试验，分析了Al₂O₃弥散强化铜合金应力-应变关系，依据动态材料理论和试验数据绘制弥散铜热加工图，并选取了3组试验温度进行热轧试验验证。结果表明，不同的应变速率变形机制不一致，分别通过不连续屈服和动态再结晶实现塑性变形；轧制试验验证了该合金最佳变形区温度为750~850℃、应变速率为1~10 s^-1。
- 弥散强化铜 /
- 塑性变形 /
- 纳米Al₂O₃质点 /
- 热加工图
Abstract: The deformation behavior of alumina dispersion strengthened copper alloy(ODSC) was investigated by hot-compression test on thermal simulation machine under the conditions of different temperatures and strain rates and the same deformation, and the stress-strain relation of ODSC was analyzed. Then hot processing maps of ODSC were established based on the dynamic material model and the hot compress test, and the reliability of hot processing maps was verified by shape rolling. The results show that the main deformation mechanisms are the discontinuous yielding and the dynamic recrystallization behavior. The optimum processing temperature is 750~850℃, and the optimum strain rates 1~10 s^-1.
- dispersion strengthened copper /
- plastic deformation /
- nano-Al₂O₃ particle /
- thermal machining diagram