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TC21合金片层组织特征对其断裂韧性的影响
发布人：上海艾荔艾金属材料有限公司www.shailiai.com
更新时间：2015-12-27
研究TC21合金经β相区固溶并慢速冷却后的片层组织特征(晶界α层厚度、α片层宽度、α集束尺寸)及断裂韧度随冷却速率的变化规律，探讨片层组织特征与断裂韧度的关系。
TC21合金片层组织特征对其断裂韧性的影响Influence of lamellar microstructure feature on fracture toughness of TC21 alloy
研究TC21合金经β相区固溶并慢速冷却后的片层组织特征(晶界α层厚度、α片层宽度、α集束尺寸)及断裂韧度随冷却速率的变化规律，探讨片层组织特征与断裂韧度的关系。结果表明：随着冷却速率的增大，TC21合金α片层集束、α片层厚度及晶界α层宽度均减小。在本文实验测试尺度范围内，α片层宽度、α片层集束尺寸及晶界α层厚度的增大均可提高合金的断裂韧性。
In order to analyze the relationship between lamellar microstructure feature (thickness of α laths, width of α lath at grain boundary and α colony size) and fracture toughness, the microstructures and fracture toughness of TC21 alloy cooled from β phase field with different slow rates were investigated. The results show that α colony size together with α laths thickness and width of α lath at grain boundary is decreased with increasing cooling rates, leading to the decrease of fracture toughness. It is positive for fracture toughness to decrease width of α lath at grain boundary, α laths thickness and α colony size.
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