Manufacturing method for double-grain-size-distribution oxide dispersion strengthened ferrite steel
A technology of dispersion strengthening and grain size, which is applied in the field of preparation of oxide dispersion strengthened ferritic steel with double grain size distribution, can solve the problems of poor corrosion resistance, deteriorate the mechanical properties of materials, etc., and achieve the improvement of oxidation performance. Effect
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Embodiment 1
[0029] (1) Prepare 8.5% Cr, 1.2% W, 0.2% V, 6.0% Al, 0.35% Y 2 o 3
[0030] The purity of the above raw materials is 99.9%, the content of C and N is less than 0.01%, and the rest is Fe, and the above are mass percentages;
[0031] (2) will divide Y 2 o 3 , Al, etc., according to the mass percentage in step (1) to prepare alloy powder by argon atomization method, the oxygen content is controlled below 0.04wt.%, and the particle size is 200-400 mesh particles as mechanical alloying spare powder;
[0032] (3) the standby powder of above-mentioned mechanical alloying and the Y in the step (1) 2 o 3 , Al is placed in a ball mill tank under argon protection throughout the whole process in the glove box. The mechanical alloying parameters are: the ball-to-material ratio is 8:1, the ball mill medium is stainless steel balls, the speed is 300r / min, and the ball mill is cooled for two hours for one hour. Carry out ball milling several times, the ball milling time is 60h, obtain ...
Embodiment 2
[0035] (1) Prepare 9.0% Cr, 1.6% W, 0.2% V, 8.0% Al, 0.35% Y 2 o 3
[0036] The purity of the above raw materials is 99.9%, the content of C and N is less than 0.01%, and the rest is Fe, and the above are mass percentages;
[0037] (2) will divide Y 2 o 3 , Al, etc., according to the mass percentage in step (1) to prepare alloy powder by argon atomization method, the oxygen content is controlled below 0.04wt.%, and the particle size is 200-400 mesh particles as mechanical alloying spare powder;
[0038](3) the standby powder of above-mentioned mechanical alloying and the Y in the step (1) 2 o 3 , Al is placed in the ball mill tank under the protection of Ar gas in the glove box. The mechanical alloying parameters are: the ball-to-material ratio is 8:1, the ball mill medium is stainless steel balls, the speed is 300r / min, and the ball is milled for two hours and cooled for one hour. Carry out ball milling several times, the ball milling time is 60h, obtain the mechanical...
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