Development of a Two-Phase Model for the Hot Deformation of Highly-Alloyed Aluminum

Beaudoin, A. J. ; Dantzig, J. A. ; Robertson, I. M. ; Gore, B. E. ; Harnish, S. F. ; Padilla, H. A.

University of Illinois at Urbana-Champaign

关键词: Alloy Systems;    Orientation;    Alloys;    Feedback;    Productivity;   

DOI  :  10.2172/859225
RP-ID  :  DOE/FE/14190
RP-ID  :  FC36-01ID14190
RP-ID  :  859225

美国|英语

来源: UNT Digital Library

【 摘 要 】

Conventional processing methods for highly alloyed aluminum consist of ingot casting, followed by hot rolling and thermal treatments. Defects result in lost productivity and wasted energy through the need to remelt and reprocess the material. This research centers on developing a fundamental understanding for deformation of wrought 705X series alloys, a key alloy system used in structural airframe applications. The development of damage at grain boundaries is characterized through a novel test that provides initiation of failure while preserving a controlled deformation response. Data from these mechanical tests are linked to computer simulations of the hot rolling process through a critical measure of damage. Transmission electron microscopy provides fundamental insight into deformation at these high working temperatures, and--in a novel link between microscale and macroscale response--the evolution of microstructure (crystallographic orientation) provides feedback for tuning of friction in the hot rolling process. The key product of this research is a modeling framework for the analysis of industrial hot rolling.