Cr 系不銹鋼板の熔接性(第 1 報) : 13 Cr 不銹鋼板の熔接性

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Weldability tests have been made of 7 different kinds of stainles steel electrodes (mostly, 3.2mm dia.) on 5 kinds of 13-Cr steel plates (mostly, 2.3mm thick) having C content ranging 0.07-0.23. The following results were obtained : 1) In longitudinal bead bending test there occurred no case of 180° bending angle without crack development in the heat-affected zone, independently of C content of steel plate and electrode type. The bending angles for ones of 0.07%C content are relatively high and stable. 2) As to the hardness of weld metal zone, a wide variance is observed, depending on electrode types. In austenite types which produced excellent elongation values of all deposit metals, considerable martensite transformation was seen in weld meta zone, making it unadvisable to use such electrodes as appreciably increase hardness. 3) In the case of 0.23%C content, cracks appeared in the heat-affected zone even under non-constraint conditions. With 0.16%C content some developed longitudinal cracks in the heat-affected zone under constraint test, while below 0.11%C content no cracks occurred. Exceptions are fusion zone cracks being observed sometimes when steel plates with 0.09%C content are welded with Mn-Cr electrode. 4) These facts can be roughly explained by the relations between C content of steel plates and martensite transformation in the heat-affected zone of base metal and by dilution of weld metal with steel plate.
社団法人溶接学会の論文
1952-09-01

Cr 系不銹鋼板の熔接性(第 1 報) : 13 Cr 不銹鋼板の熔接性

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