Austenitic stainless steel with excellent ultra-low temperature performance and manufacturing method thereof
A technology of austenitic stainless steel and manufacturing method, which is applied in the field of austenitic stainless steel, can solve the problems of inaccurate control and high ferrite content, and achieve the effects of increasing N content, improving ultra-low temperature toughness, and reducing C content
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[0044] The alloy sample of Example 2 is electrolytically corroded, the etchant is oxalic acid solution, the corrosion voltage is 6V, and the time is 60-90s. The metallographic diagram is tested, and the results are as follows: figure 1 shown by figure 1 It can be seen that the metallographic structure of the material is austenite structure, and its ferrite content measured by software is less than 0.5% under a field of view of 500 times.
[0045]
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