Record Details

Recrystallization Phenomena During Friction Stir Processing of Hypereutectic Aluminum-Silicon Alloy

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Recrystallization Phenomena During Friction Stir Processing of Hypereutectic Aluminum-Silicon Alloy
 
Creator RAO, AG
RAVI, KR
RAMAKRISHNARAO, B
DESHMUKH, VP
SHARMA, A
PRABHU, N
KASHYAP, BP
 
Subject STRAIN RATE SUPERPLASTICITY
AL-SI ALLOYS
METAL-MATRIX COMPOSITES
MECHANICAL-PROPERTIES
GRAIN-REFINEMENT
DYNAMIC RECRYSTALLIZATION
MICROSTRUCTURE
TEMPERATURE
BEHAVIOR
PERFORMANCE
 
Description Microstructural evolution and related dynamic recrystallization phenomena were investigated in overlapping multipass friction stir processing (FSP) of hypereutectic Al-30 pct Si alloy. FSP resulted in the elimination of porosities along with the refinement of primary silicon particles and alpha aluminum grains. These alpha aluminum grains predominantly exhibit high angle boundaries with various degrees of recovered substructure and dislocation densities. The substructure and grain formation during FSP take place primarily by annihilation and reorganization of dislocations in the grain interior and at low angle grain boundary. During multipass overlap FSP, small second phase particles were observed to form, which are accountable for pinning the grain boundaries and thus restricting their growth. During the multipass overlap FSP, the microstructure undergoes continuous dynamic recrystallization by formation of the subgrain boundary and subgrain growth to the grain structure comprising of mostly high angle grain boundaries.
 
Publisher SPRINGER
 
Date 2014-10-15T12:05:27Z
2014-10-15T12:05:27Z
2013
 
Type Article
 
Identifier METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 44A(3)1519-1529
http://dx.doi.org/10.1007/s11661-012-1489-6
http://dspace.library.iitb.ac.in/jspui/handle/100/14860
 
Language en