Corrosion behavior of AA5083 produced by high-energy ball milling
Creators
- 1. Department of Chemical, Biomolecular Engineering and Corrosion Engineering, The University of Akron, Akron, OH 44325 (United States)
- 2. Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27606 (United States)
- 3. Department of Mechanical Engineering, Cleveland State University, Cleveland, OH 44115 (United States)
- 4. Concurrent Technologies Corporation, 100 CTC Drive, Johnstown, PA 15904 (United States)
Description
Highlights: • Ball milling AA5083 caused nanocrystalline structure and homogenous microstructure. • Spark plasms sintering was effective in consolidation. • Simultaneous improvement in corrosion resistance and hardness by ball milling. • Improved passive film characteristics and corrosion resistance by ball milling. -- Abstract: The corrosion, microstructure, and hardness of nanocrystalline AA5083 were compared to that of conventional AA5083-H116 and consolidated gas atomized powder. The nanocrystalline AA5083 was produced by consolidating high-energy ball milled gas atomized powder with two methods: cold compaction and spark plasma sintering. Electrochemical impedance spectroscopy, cyclic potentiodynamic polarization, Mott-Schottky analysis, and immersion tests followed by surface analysis were used to evaluate the corrosion behavior in 0.6 M NaCl solution. Pitting corrosion resistance of the nanocrystalline AA5083 was superior to that of commercial AA5083-H116. The improved corrosion resistance was primarily attributed to the homogenous microstructure and significant grain refinement below 100 nm.
Additional details
Identifiers
- DOI
- 10.1016/j.jallcom.2020.158268;
- PII
- S0925838820346314;
Publishing Information
- Journal Title
- Journal of Alloys and Compounds
- Journal Volume
- 857
- Journal Page Range
- vp.
- ISSN
- 0925-8388
- CODEN
- JALCEU
INIS
- Country of Publication
- Switzerland
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 55000965
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CORROSION RESISTANCE; CRYSTAL LATTICES; ELECTROCHEMISTRY; GRAIN REFINEMENT; MICROSTRUCTURE; MILLING; NANOSTRUCTURES; PITTING CORROSION; SODIUM CHLORIDES
- Descriptors DEC
- ALKALI METAL COMPOUNDS; CHEMICAL REACTIONS; CHEMISTRY; CHLORIDES; CHLORINE COMPOUNDS; CORROSION; CRYSTAL STRUCTURE; HALIDES; HALOGEN COMPOUNDS; MACHINING; SODIUM COMPOUNDS; SODIUM HALIDES
Optional Information
- Copyright
- Copyright (c) 2020 Elsevier B.V. All rights reserved.