Modeling of residual stresses by HY-100 weldments Page: 4 of 8
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EXPERIMENTAL
A GTA welding process without filler metal was used to make a spot weld on a HY-100
steel disk. The disk measured 19mm in height and 75mm in diameter. The weld was located at
the center of the disk surface. The following welding parameters were used: Electric current I =
320A, voltage U = 15V, and 4mm electrode diameter. Welding arc time was 5s with argon
shielding and followed by a 5 seconds post purge. No constraint was used during welding and
subsequent cooling. Figure 1 shows the welding setup.Welding Parameters
.J Miller CCICP 1500
4mm diameter electrode
320 amps
Contact 15volts
Gas Cup
Electrode
t7
Disk Specimen O
(HY-100)
755 sea. welding time
5 se. post purge
Argon shielding
40-45 CFHFigure 1. Welding setup.
Neutron diffraction measurements were performed on the BEAM Tube-6 (BT-6) triple-
axis spectrometer at the National Institute of Standard and Technology Research Reactor.
Measurements were made using a nominal gauge volume of 3 x 3 x 3 mm. Figure 2 shows the
positions and relative sizes of the measurement points which are located on the radial section
plane. Instrument details and measurement methodology have been discussed elsewhere (Prask,
et. al., 1991; Brand, et. al., 1994).
0 2.5 7.5 1012.515 25 [mini
r3.3
6.3"
12.3 "
15.3 " 00
[min0
0
0Figure 2. HY-100 disk with ND measurement locations.
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Zacharia, T.; Taljat, B. & Radhakrishnan, B. Modeling of residual stresses by HY-100 weldments, article, February 1, 1997; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc687927/m1/4/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.