焊接热循环对Ti35钛合金组织性能的影响
发布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新时间：2016-01-20
采用焊接热模拟技术，通过Gleeble−1500D型热模拟试验机，模拟Ti35钛合金自高温以不同冷却速度冷却的过程，研究焊后冷却速度对Ti35钛合金焊接热影响区组织和性能的影响。
焊接热循环对Ti35钛合金组织性能的影响Effect of simulated welding thermal cycle on microstructure and properties of Ti35 alloy采用焊接热模拟技术，通过Gleeble−1500D型热模拟试验机，模拟Ti35钛合金自高温以不同冷却速度冷却的过程，研究焊后冷却速度对Ti35钛合金焊接热影响区组织和性能的影响。研究结果表明：在相同的热输入量条件下，随冷却速度的提高，材料的强度增大，塑性增强；在较低的冷却速度下，热循环试样的冲击韧性值较低，晶粒组织较粗大；不同冷却速度的均温区试样在模拟料液下均具有较好的耐蚀性能。
Effects of cooling velocity on the microstructure and properties of Ti35 alloy were studied by welding thermal simulation technique which simulated the cooling process of welding heat-affected zone (HAZ) from high temperature using Gleeble−1500D machine. The results show that increments in cooling velocity improve the strength and plasticity with the same heat input. Upon the lower cooling velocity, the impact ductility of samples is lower, and the grain is coarse. All samples from different cooling velocities possess high corrosion resistant performance under simulated solution.
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