期刊
MATERIALS CHARACTERIZATION
卷 100, 期 -, 页码 192-206出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2014.11.035
关键词
Alloy 718; Gas Tungsten Arc welding; Laves phase; X-ray diffraction; Differential scanning calorimetry
Microstructural characterization of alloy 718 fusion zone welded with both solid solution and age hardenable filler metal has been done. The microsegregation and the aging response were studied by employing three levels of weld cooling rate. Gas Tungsten Arc welding process was used. The fusion zone of solid solution filler metal has been responding to the aging treatment due to the weld process conditions and weld metal chemistry. However the weld metal composition was modified due to the higher molybdenum (Mo) content in solid solution filler metal. The effect of this modification on the phase reaction temperatures was studied and the same was compared with the conventional filler metal. (C) 2014 Elsevier Inc. All rights reserved.
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