We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Fatigue Behaviors of Materials Processed by Planar Twist Extrusion.
- Authors
Ebrahimi, Mahmoud
- Abstract
Since the last decade, the fabrication of ultrafine grain and nanostructure metals and alloys has attracted much attention in the field of materials engineering. The present study aimed at experimentally investigating the fatigue properties that are of great importance in dynamic structures before and after the planar twist extrusion process for both commercially pure copper and 6061 aluminum alloy. The results indicated that the yield strength, tensile strength, hardness, and fatigue endurance of copper increased by about 398, 122, 198, and 183 pct, respectively, while they improved by about 429, 212, 227, and 148 pct, respectively, in aluminum alloy as compared to the initial conditions. The stress-strain curves displayed sizable reduction of strain hardening. Furthermore, grain-size correction factors based on the empirical results were introduced to include the effect of the grain-size effect on both low and high-cycle fatigue strengths of the material.
- Subjects
MATERIAL fatigue; STRAINS &; stresses (Mechanics); STRENGTH of materials; ALUMINUM alloys; NANOSTRUCTURED materials
- Publication
Metallurgical & Materials Transactions. Part A, 2017, Vol 48, Issue 12, p6126
- ISSN
1073-5623
- Publication type
Article
- DOI
10.1007/s11661-017-4375-4