文章基本信息

标题：VHCF Properties of A7075-T651 Al Alloy Depending on Shot Peening and Fatigue Testing Methods
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作者：Min-Soo Suh ; Chang Hee Suh ; Seung-Hoon Nahm 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2015
卷号：7
期号：1
页码：126848
DOI：10.1155/2014/126848
语种：English
出版社：Sage Publications Ltd.
摘要：Fatigue characteristics of A7075-T651 aluminum material were studied with surface treatment of shot peening. The fatigue life was characterized by two fatigue testing methods, ultrasonic fatigue test (UFT, 20 kHz) and the rotary-bending fatigue test (RFT, 53 Hz). The fatigue life improvement was confirmed by rotary bending fatigue tester. However, the surface modification effects were hardly observed by UFT method. The RFT results validate that the fatigue properties of RFT show a fine congruence regardless of the test machine types. The results of hardness, compressive residual stress, fatigue strength, and mechanical properties of specimen were improved by shot peening.