Effect of precipitate structure on hot deformation of Al-Mg-Mn alloys

Technical Report · Fri Oct 01 00:00:00 EDT 1993

DOI:https://doi.org/10.2172/10110243· OSTI ID:10110243

Vetrano, J S; Lavender, C A; Smith, M T; Bruemmer, S M

The size and nature of precipitates have strong effects on microstructural evolution from the cold-worked state through the course of deformation at high temperatures. Through selected heat treatments and minor alloying alterations the precipitate structure of AA5083 has been manipulated. Minor additions of Zr have been used to create fine (50 to 100 nm) precipitates. The number and size distribution of medium-sized (<1 {mu}m) Mn-rich precipitates were modified by increasing the Mn concentration in conjunction with several heat treatment paths. Effects of these precipitates on the dislocation structure, recrystallization behavior and grain growth during high-temperature deformation have been elucidated.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 10110243
• Report Number(s): PNL-SA-23016; CONF-9310224-2; ON: DE94004596; TRN: AHC29401%%75
• Resource Relation: Conference: Materials Week `93,Pittsburgh, PA (United States),17-21 Oct 1993; Other Information: PBD: Oct 1993
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
MICROSTRUCTURE
DEFORMATION
MAGNESIUM ALLOYS
ZIRCONIUM
METALLURGICAL EFFECTS
MANGANESE
PARTICLE SIZE
HEAT TREATMENTS
ZIRCONIUM ADDITIONS
SPATIAL DISTRIBUTION
MANGANESE ADDITIONS
DISLOCATIONS
RECRYSTALLIZATION
GRAIN GROWTH
ALLOY SYSTEMS
EXPERIMENTAL DATA
PRECIPITATION
INTERMETALLIC COMPOUNDS
360102
360103
STRUCTURE AND PHASE STUDIES
MECHANICAL PROPERTIES