Mechanisms of age - embrittlement in duplex stainless steels are discussed to explain the deterioration behavior of toughness by aging in the various specimens such as the simulated heat affected zone (HAZ) and TlG weld joint HAZ, which was reported in the preceding paper of this volume.Hiroshi ...
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The weld heat affected zone (HAZ) of tungsten inert gas (TIG) welded cast IN 738 superalloy has been examined. HAZ microfissuring was observed in alloy welded in solution treated and overaged conditions. Closer and careful microstructural examination by analytical scanning electron microscopy ...
The results are summarized as follolws.(1) Such welding thermal cycle conditions as rapid cooling rate, high heating temperature, long heating time, annealing following thermal cycle, and restraint of thermal strain raise susceptibility to the age - embrittlement in the simulated HAZ.(2) In ...
Models have been derived for the evaluation of the heat affected zone (HAZ) hardness of cast iron weldment cooled in groundnut oil in relation to the respective and combined values of HAZ hardness of aluminium and mild steel welded and cooled under the same conditions. The models: ±=2·2330...
The weld heat affected zone (HAZ) of tungsten inert gas (TIG) welded cast IN 738 superalloy has been examined. HAZ microfissuring was observed in alloy welded in solution treated and overaged conditions. Closer and careful microstructural examination by analytical scanning electron microscopy ...