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发表时间：2018-01-01

发表刊物：热加工工艺

卷号：47

期号：7

页面范围：201

ISSN号：1001-3814

摘要：The ferrite content in as-cast austenitic stainless welded joint before
   and after solution treatment was measured by using the multi angle
   secant method and computer image processing method, and the
   microstructure, impact properties, tensile properties and intergranular
   corrosion resistance of the welded joints were analyzed. The results
   show that the ferrite content of weld zone in the welded joint is high,
   and that of heat affected zone is low. After solution treatment, the
   ferrite content of the welded joint decreases obviously, the ferrite
   structure in weld zone transfers from lath shape to dispersed points,
   and a large number of hard, brittle precipitates are dissolved. Besides,
   the impact toughness, the elongation and the intergranular corrosion
   resistance of the welded joint increase significantly.

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