Dynamic grain growth during superplastic deformation

Journal Article · Wed May 01 00:00:00 EDT 1996 · Acta Materialia

DOI:https://doi.org/10.1016/1359-6454(95)00263-4· OSTI ID:247959

Rabinovich, M Kh ^[1]; Trifonov, V G ^[2]

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1. Ufa State Aviation-Technical Univ. (Russian Federation)
2. Russian Academy of Sciences, Ufa (Russian Federation). Inst. for Metals Superplasticity Problems

Superplastic deformation (SPD) causes the accelerated anisotropic grain growth. This process results in the formation of structure which is quasistable during superplastic deformation and unstable after deformation. The degree of instability is determined by the size of grains, their shape coefficient which depends on the nature of an alloy and is equal to 1.1--1.5 after SPD, and by the unbalance of triple junctions at boundaries. Alloying of metals can affect the thermodynamic force and mechanism of dynamic anisotropic grain growth and correspondingly influence the parameters of superplasticity in alloys.

• OSTI ID: 247959
• Journal Information: Acta Materialia, Vol. 44, Issue 5; Other Information: PBD: May 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
DEFORMATION
GRAIN GROWTH
COPPER ALLOYS
SILICON ALLOYS
ZINC ALLOYS
MAGNESIUM ALLOYS
LITHIUM ALLOYS
MANGANESE ADDITIONS
ZIRCONIUM ADDITIONS
HEAT TREATMENTS
RECRYSTALLIZATION
GRAIN SIZE
STRAIN RATE
FLOW STRESS
DUCTILITY
CORRELATIONS
ANISOTROPY
SHAPE