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Effect of different temperatures on the metallographic structure and tensile property of 2024-T4 alloy in integral heating single point incremental forming.
Microscopy Research and Technique ( IF 2.0 ) Pub Date : 2020-04-09 , DOI: 10.1002/jemt.23485 Peng Zhang 1 , Juan Li 2 , Minghe Chen 1
Microscopy Research and Technique ( IF 2.0 ) Pub Date : 2020-04-09 , DOI: 10.1002/jemt.23485 Peng Zhang 1 , Juan Li 2 , Minghe Chen 1
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To study the tensile property and metallographic structure evolution of 2024‐T4 high‐strength aluminum alloy in integral heating single point incremental forming (IHSPIF), the warm tensile tests were carried out at 120–240°C with the strain rates of 0.1–0.001 s−1. Its results could provide a certain theoretical reference to the IHSPIF. The integral heating was different from the local heating, which was to heat the overall sheet to be deformed. It was found in the tensile tests that at the strain rate of 0.01 s−1, the optimum forming temperature was determined to be 210°C at which the ductility was the best. The material dynamically recovered at 240°C. The following IHSPIF tests were conducted at different temperatures. By observing the organization of the sidewall of the square tapered parts, the alloy dynamically recovered appeared at 210°C and its grains coarsened at 240°C. Considering the temperature interval of 30 and below the recrystallizing temperature of aluminum alloy, it was concluded that the optimal temperature for the integral heating IHSPIF was about 150°C.
中文翻译：
整体加热单点渐进成形中不同温度对2024-T4合金金相组织和拉伸性能的影响。
为了研究2024-T4高强度铝合金在整体加热单点渐进成形（IHSPIF）中的拉伸性能和金相组织演变，在120-240°C的温度下以0.1-0.001的应变速率进行了热拉伸试验s -1。其结果可以为IHSPIF提供一定的理论参考。整体加热不同于局部加热，局部加热是加热要变形的整个片材。在拉伸试验中发现，在0.01 s -1的应变速率下，确定最佳成形温度为210℃，在该温度下延展性最佳。该材料在240°C下动态恢复。以下IHSPIF测试是在不同温度下进行的。通过观察方形渐缩部分的侧壁的组织，动态回收的合金在210°C时出现并且其晶粒在240°C时变粗。考虑到温度间隔为30℃且低于铝合金的重结晶温度，可以得出结论，整体加热IHSPIF的最佳温度约为150°C。
更新日期：2020-04-09
中文翻译：
整体加热单点渐进成形中不同温度对2024-T4合金金相组织和拉伸性能的影响。
为了研究2024-T4高强度铝合金在整体加热单点渐进成形（IHSPIF）中的拉伸性能和金相组织演变，在120-240°C的温度下以0.1-0.001的应变速率进行了热拉伸试验s -1。其结果可以为IHSPIF提供一定的理论参考。整体加热不同于局部加热，局部加热是加热要变形的整个片材。在拉伸试验中发现，在0.01 s -1的应变速率下，确定最佳成形温度为210℃，在该温度下延展性最佳。该材料在240°C下动态恢复。以下IHSPIF测试是在不同温度下进行的。通过观察方形渐缩部分的侧壁的组织，动态回收的合金在210°C时出现并且其晶粒在240°C时变粗。考虑到温度间隔为30℃且低于铝合金的重结晶温度，可以得出结论，整体加热IHSPIF的最佳温度约为150°C。
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