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Microstructure Evolution and Abrasive Wear Behavior of Ti-6Al-4V Alloy

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Title Microstructure Evolution and Abrasive Wear Behavior of Ti-6Al-4V Alloy
 
Creator HADKE, S
KHATIRKAR, RK
SHEKHAWAT, SK
JAIN, S
SAPATE, SG
 
Subject BETA-TITANIUM ALLOYS
PHASE-TRANSFORMATIONS
TI6AL4V ALLOY
ALPHA-PHASE
STEEL
RESISTANCE
DIFFRACTION
HARDNESS
MARTENSITE
SHEET
abrasive wear
electron backscattered diffraction
microstructure
Ti-6Al-4V alloy
 
Description This paper investigates the effect of quenching and aging treatment on microstructure and abrasive wear of Ti-6Al-4V alloy. The as-received alloy was solution treated at 1339 K, then oil quenched, followed by aging at 823 K for 4 h (14,400 s). The microstructures of as-received and quench-aged specimens were characterized by using optical microscopy, scanning electron microscopy, energy dispersive spectroscopy, and electron backscattered diffraction techniques. The as-received specimen consisted of very fine alpha grains (average grain size 2 mu m) with beta phase uniformly dispersed throughout. The microstructure of the quench-aged specimen showed alpha plates (formed by the decomposition of alpha' during aging). The beta phase precipitated out of alpha' martensite during aging and hence was dispersed uniformly in the alpha matrix. Ti-6Al-4V alloy was quench-aged to achieve maximum hardness with a view that the increased hardness would lead to an improvement in abrasive wear behavior. Two-body abrasive wear tests were carried out on the as-received and quench-aged specimens using pin-on-disk apparatus with SiC as abrasive media (150-grit size). The effect of sliding distance and normal load on the abrasive wear behavior was studied. The wear resistance of the as-received specimen was greater than that of quench-aged specimen, while hardness of the as-received specimen was lower than that of quench-aged specimen. The abrasive wear behavior of Ti-6Al-4V alloy has been explained based on morphology/microstructure of the alloy and the associated wear mechanism(s).
 
Publisher SPRINGER
 
Date 2016-01-14T12:26:08Z
2016-01-14T12:26:08Z
2015
 
Type Article
 
Identifier JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 24(10)3969-3981
1059-9495
1544-1024
http://dx.doi.org/10.1007/s11665-015-1667-y
http://dspace.library.iitb.ac.in/jspui/handle/100/17493
 
Language en