The Effect of Welding Conditions on the Crack Sensitivity of Austenitic Stainless Steel Weld Metals

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概要

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• The effect of the variation in welding conditions on the ferrite content and the crack sensitivity has been investigated with austenitic stainless steel weld metals. The results may be summarized as follows. (1) The ferrite content will not very over a wide renga of welding currents and speeds providied the weld matal is not influenced by dilution of the base metal. (2) According to FISOCO crack tests, using Mn-Mo steel plates and the D-309Mo coated electrodes a higher welding current increases duiltion, resulting in a decrease in ferrite content and an increase in crack sensitivity. (3) When the arc length is extended longer than normal, nitrogen content in the weld metal rapidly increases. And the nitrogen in the weld has a remarkable function of making ferrite austenitic.

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著者

• Wachi Hiroshi

  Hitachi Research Laboratory Hitachi Ltd.

• Watanabe Kiyoshi

  Hitachi Research Laboratory Hitachi Ltd.

• Asakura Shigetsugu

  Hitachi Research Laboratory Hitachi Ltd.

• WATANABE Kiyoshi

  Hitachi Research Laboratory, Hitachi, Ltd.

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• The Effect of Welding Conditions on the Crack Sensitivity of Austenitic Stainless Steel Weld Metals

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