Roll forming technology for manufacturing axisymmetric automotive components
A unique roll forming technology that permits complex axisymmetric components, such as automobile wheels and turbine disks, to be formed in a single forming operation, has been developed by two Russian Institute, the Institute of Technical Physics of the Russian Federal Nuclear Center and the Institute for Metals Superplasticity Problems. This process was used to fabricate automobile wheels from a Russian AVT alloy, a 6010 aluminum alloy equivalent. The process included steps of isothermal roll forming of preforms into wheels shapes, all at 430C for the AVT alloy. The microstructure and mechanical properties were evaluated at various locations in the finished wheels by optical metallography and tensile testing at elevated temperatures. Tensile properties were obtained by stain-rate change tests and tensile tests to failure at high strain rates. Microstructure and mechanical propertied of the preforms and blanks were also evaluated. The results indicate that dynamically recovered microstructures were developed during the processing, which showed relatively high strain rate sensitivity and rendered sufficiently plasticity at the elevated temperature for wheel fabrication process.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- Department of Defense, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 641306
- Report Number(s):
- UCRL-JC-128673; CONF-980202-; ON: DE98052086; CNN: W-7405-Eng-48
- Resource Relation:
- Conference: Annual meeting of the Minerals, Metals and Materials Society (TMS), San Antonio, TX (United States), 15-19 Feb 1998; Other Information: PBD: 28 Oct 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
POWDER METALLURGY TiAl ALLOYS: MICROSTRUCTURES AND PROPERTIES
Spray forming of superplastic aluminum sheet