Relationship between fracture toughness, fracture path, and microstructure of 7050 aluminum alloy: Part I. Quantitative characterization
Relationship between fracture toughness, fracture path, and microstructure of 7050 aluminum alloy: Part I. Quantitative characterization
复制标题
DOI：
10.1007/s11661-998-0246-3
复制
发表时间：
1998-04-01
影响因子：
2.8
通讯作者：
Liu, J
中科院分区：
文献类型：
--
作者：
Deshpande, NU;Gokhale, AM;Liu, J
Al-Zn-Mg-Cu基7XXX铝合金的断裂韧性随着再结晶程度的增加而降低。在本文中，7050 合金（7XXX 系列的典型合金）平面应变断裂韧性样品的断裂路径被定量表征为再结晶程度、样品取向和时效条件的函数。断裂路径与断裂韧性定量相关，并通过体视分析估计体微观结构属性。在配套文章中，这些定量数据用于开发和验证基于多重断裂微观机制的模型，该模型将断裂韧性与部分再结晶合金板的许多微观结构参数联系起来。
The fracture toughness of Al-Zn-Mg-Cu-based 7XXX aluminum alloys decreases with an increase in the extent of recrystallization. In this contribution, the fracture path of plane-strain fracture-toughness specimens of 7050 alloy (a typical alloy of the 7XXX series) is quantitatively characterized as a function of degree of recrystallization, specimen orientation, and aging condition. The fracture path is quantitatively correlated to fracture toughness, and the bulk microstructural attributes estimated via stereological analysis. In the companion article, these quantitative data are used to develop and verify a multiple-fracture micromechanism-based model that relates the fracture toughness to a number of microstructural parameters of the partially recrystallized alloy plate.