The Effects of Anodization Treatment on the Microstructure and Fatigue Behavior of 7075-T73 Aluminum Alloy

被引：11
|
作者：
Shih, Teng-Shih [1 ]
Lee, Tin-Hou [1 ]
Jhou, Ying-Jhe [1 ]
机构：
[1] Natl Cent Univ, Dept Mech Engn, Jhongli 32001, Taoyuan County, Taiwan
来源：
MATERIALS TRANSACTIONS | 2014年 / 55卷 / 08期
关键词：
7075 aluminum alloy; fatigue life; anodization treatment; microstructure; 2ND PHASE PARTICLES; DYNAMIC RECRYSTALLIZATION; ANODIC-OXIDATION; FILMS; SURFACE;
D O I：
10.2320/matertrans.M2014121
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The fatigue behaviors of 7075-T73 alloy with/without anodization/sealing treatment were investigated in this study. The microstructure of different samples was analyzed by electron microscopy. As the experiments, the microstructure were observed from the anodized/sealed samples to indicate that precipitates trapped at subsurface near film/metal (f/m) interface would partly dissolved and the deformed matrix existed high fractions of high angle grain boundaries. The bare 7075-T73 alloy samples achieved fatigue strength of 225 MPa and the anodized/sealed samples enhanced their fatigue strength at 107 life cycles with 10-20 mu m film thickness. The fractured anodized/sealed sample showed fine striation spacing than bare sample after subjected to low stress amplitude.
引用
收藏
页码：1280 / 1285
页数：6
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