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首页> 外文期刊>Journal of Materials Engineering and Performance >Influence of Processing Parameters on Grain Size Evolution of a Forged Superalloy
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Influence of Processing Parameters on Grain Size Evolution of a Forged Superalloy

机译：工艺参数对锻造高温合金晶粒尺寸演变的影响

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摘要

The microstructure evolution of nickel-based superalloys has a great influence on the mechanical behavior during service conditions. Microstructure modification and the effect of process variables such as forging temperature, die-speed, and tool heating were evaluated after hot die forging of a heat-resistant nickel-based alloy. Forging sequences in a temperature range from 1253 to 1323 K were considered through experimental trials. An Avrami model was applied using finite element data to evaluate the average grain size and recrystallization at different evolution zones. It was observed that sequential forging at final temperatures below 1273 K provided greater grain refinement through time-dependent recrystallization phenomena. This investigation was aim to explore the influence of forging parameters on grain size evolution in order to design a fully homogenous and refined microstructure after hot die forging.
机译：镍基高温合金的组织演变对使用条件下的机械性能有很大影响。在对耐热镍基合金进行热模锻后，评估了微观结构的改变以及工艺变量对锻造温度，模头速度和工具加热的影响。通过实验试验，考虑了温度范围为1253至1323 K的锻造序列。使用有限元数据应用Avrami模型来评估平均晶粒尺寸和不同析出区的重结晶。观察到，在最终温度低于1273 K的情况下进行顺序锻造可通过随时间变化的再结晶现象提供更大的晶粒细化。这项研究旨在探讨锻造参数对晶粒尺寸演变的影响，以便设计热模锻后完全均匀且细化的显微组织。

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