Comparison of Fatigue Life of AA2050-T852 and AA7050-T7452 Alloy Forgings at Different Orientations-Reference-Cited by-同舟云学术

Comparison of Fatigue Life of AA2050-T852 and AA7050-T7452 Alloy Forgings at Different Orientations

Published:2023-05-08 Issue:4 Volume:145 Page:
ISSN:0094-4289
Container-title:Journal of Engineering Materials and Technology
language:en
Short-container-title:

Author:

Fuhr N.¹,Zhou S.²,Shen K.¹,Rajab A.¹,Es-Said S.¹,Thaung S.¹,Tan S.¹,Riebe R.¹,Santos N.¹,Thura Hein Y.¹,Toal R.³,Li Y.⁴,Timko M.⁵,Es-Said O. S.¹

Affiliation:

1. Loyola Marymount University Department of Mechanical Engineering, , Los Angeles, CA 90045

2. Kunming University of Science and Technology Department of Materials Science and Engineering, , Kunming 650093 , China

3. Loyola Marymount University Department of Computer Science, , Los Angeles, CA 90045

4. Loyola Marymount University Mane Laboratories College of Science and Engineering, , Los Angeles, CA 90045

5. Weber Metals Inc. , Paramount, CA 90723

Abstract

Abstract This study compares the fatigue performance between the AA2050-T852 alloy and AA7050-T7452 alloy traditionally used in aircraft structures. Rotating beam fatigue tests were performed on AA2050-T852 and AA7050-T7452 specimens cut from forged plates with different orientations and at different thickness levels. The samples were tested at 345 MPa (50 ksi), 276 MPa (40 ksi), 207 MPa (30 ksi), and 172 MPa (25 ksi). Scanning Electron Microscope (SEM) images showed mixed-mode failure in all samples. However, the equiaxed dimples were more abundant and finer in the AA2050-T852 alloy. The results indicated that AA2050-T852 alloy demonstrated better fatigue life performance compared to AA7050-T7452 alloy at almost all stresses. No significant difference in fatigue anisotropy was found in one alloy versus the other.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://asmedigitalcollection.asme.org/materialstechnology/article-pdf/145/4/041001/7012035/mats_145_4_041001.pdf

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