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WELD HEAT-AFFECTED ZONE IN TI-6AL-4V ALLOY .1. COMPUTER-SIMULATION OF THE EFFECT OF WELD VARIABLES ON THE THERMAL CYCLES IN THE HAZ

DSpace at IIT Bombay

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Title WELD HEAT-AFFECTED ZONE IN TI-6AL-4V ALLOY .1. COMPUTER-SIMULATION OF THE EFFECT OF WELD VARIABLES ON THE THERMAL CYCLES IN THE HAZ
 
Creator SHAH, AK
KULKARNI, SD
GOPINATHAN, V
KRISHNAN, R
 
Subject mechanical-properties
ti-6al-4v alloy
heat-affected zone
computer simulation
weld thermal cycles
weld variables
rosenthal equations
heat input
plate thickness
preheat temperature
interpass temperature
 
Description The weld thermal cycles encountered in the HAZ of titanium alloys have been characterized using modified Rosenthal equations. The results are shown in the form of axonometric plots depicting the effect of two weld variables keeping the other variables fixed. Computer simulation results show that the heat input and the plate thickness are the major variables affecting the thermal cycles in the HAZ. The effects of changes in welding speed are reflected in the variation in the heat input. The electrode radius has minimal effect and can be termed as the minor variable. Preheat or interpass temperatures have an intermediate effect. An increase in electrode radius or decrease in plate thickness requires large apparent displacement of the heat source above the plate surface to be incorporated in the analytical solutions. The melt pool width increases sharply with an increase in the heal input (q/v) or a decrease in plate thickness (d); however, preheat temperature (T-o) has negligible effect. The effect of weld variables on the effective hear input is also similar. The t(8/5) parameter increases sharply with reducing plate thickness or increasing heat input.
 
Publisher AMER WELDING SOC
 
Date 2011-07-17T10:12:07Z
2011-12-26T12:50:15Z
2011-12-27T05:36:24Z
2011-07-17T10:12:07Z
2011-12-26T12:50:15Z
2011-12-27T05:36:24Z
1995
 
Type Article
 
Identifier WELDING JOURNAL, 74(9), S297-S304
0043-2296
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4696
http://hdl.handle.net/10054/4696
 
Language en