VHCF Properties of A7075-T651 Al Alloy Depending on Shot Peening and Fatigue Testing Methods-Reference-Cited by-同舟云学术

VHCF Properties of A7075-T651 Al Alloy Depending on Shot Peening and Fatigue Testing Methods

Published:2014-12-15 Issue:1 Volume:7 Page:126848
ISSN:1687-8140
Container-title:Advances in Mechanical Engineering
language:en
Short-container-title:Advances in Mechanical Engineering

Author:

Suh Min-Soo¹,Suh Chang Hee²,Nahm Seung-Hoon³,Suh Chang-Min⁴

Affiliation:

1. Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea

2. Daegu Mechatronics & Materials Institute, Daegu 704-240, Republic of Korea

3. Korea Research Institute of Standards and Science, Daejeon 305-600, Republic of Korea

4. School of Mechanical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea

Abstract

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.

Publisher

SAGE Publications

Subject

Mechanical Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1155/2014/126848

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