直接时效处理对GH169合金组织和性能的影响

金哲; 江贵藻; 周瑞发

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航空材料学报 ›› 1985, Vol. 5 ›› Issue (1) : 13-19.

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直接时效处理对GH169合金组织和性能的影响

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THE INFLUENCE OF DIRECT AGING TREATMENT ON THE STRUCTURES AND THE MECHANICAL PROPERTIES FOR GH169 ALLOY

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摘要

本文研究了直接时效(DA)处理对GHlss合金组织和性能的影响。结果表明DA处理显著地提高合金的拉伸强度、拉伸塑性和低周疲劳，基本上不改变持久性能.合金的强化可以归结于是高密度位错，亚结构和细晶粒以及弥散分布的',''和相的综合影响.位错密度()和亚晶尺寸(L)对室温屁服强度的贡献可以用下列方程式表示0.2=672.8+5.910-41/2

Abstract

In this paper, the influence of direct aging (DA)treatment on the microstructures and mechanical properties for GH169 alloy was studied. The results indicate that the tensile strength, tensile plasticity and low-cycle fatigue properties are remarkably increased and stress-rupture properties are not changed basically by DA treatment,The strengthing of the alloy may be ascribed to the comprehensive effect of the higher density dislocation,sub-structure,fine grain and dispersed ',''and phase after DA treatment, In which the contribution of dislocation density() and subgrain size(L) on yield strength at room temperature can be expressed by the following equations. 0.2=672.8+5.910-41/2

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金哲, 江贵藻, 周瑞发. 直接时效处理对GH169合金组织和性能的影响[J]. 航空材料学报, 1985, 5(1): 13-19

Jin Zhe, Jiang Guizao, Zhou Ruifa. THE INFLUENCE OF DIRECT AGING TREATMENT ON THE STRUCTURES AND THE MECHANICAL PROPERTIES FOR GH169 ALLOY[J]. Journal of Aeronautical Materials, 1985, 5(1): 13-19

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