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Fabrication of strip or workpiece cut from cold rolled maraging steel and hardened by cold plastic deformation followed by recrystallization annealing treatment
Fabrication of strip or workpiece cut from cold rolled maraging steel and hardened by cold plastic deformation followed by recrystallization annealing treatment
Fabrication of a strip or workpiece cut from a cold rolled maraging steel strip and hardened by heat treatment involves, prior to the heat treatment, subjecting the strip to cold plastic deformation with a rate of strain hardening greater than 30 % and to a recrystallization annealing to obtain a fine grain with an ASTM index greater than 8. The maraging steel composition comprises, by weight: (a) 12% = Ni = 24.5%; 2.5% = Mo = 12%; 4.17% = Co = 20%; Al = 0.15%; Ti = 0.1%; N = 0.003%; Si = 0.1%; Mn = 0.1%; C = 0.005%; S = 0.001%; P = 0.005%; H = 0.0003%; and O = 0.001%. The composition also satisfies the following relationships: (a) 20% = Ni + Mo = 27%; (b) 50 (c) Co asterisk Mo = 200; (d) Ti asterisk N = 2 asterisk 10-4. Independent claims are also included for; (a) the strip or workpiece obtained by this method; (b) a drive belt incorporating at least one of these strips; and (c) a support grill for an integrated circuit made up of a workpiece of this kind.
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机译：从冷轧马氏体时效钢带上切下并通过热处理进行硬化的带材或工件的制造涉及，在热处理之前，对带材进行冷塑性变形，使其应变硬化率大于30％，并进行重结晶退火，以进行热处理。获得ASTM指数大于8的细晶粒。马氏体时效钢组合物按重量计包含：（a）12％≤Ni≤24.5％; 2.5％<= Mo <= 12％; 4.17％<= Co <= 20％; Al <= 0.15％; Ti <= 0.1％; N <= 0.003％; Si <= 0.1％; Mn≤0.1％; C <= 0.005％; S <= 0.001％; P <= 0.005％; H <= 0.0003％;并且O ＜＝ 0.001％。该组成还满足以下关系：（a）20％≤Ni+Mo≤27％; （b）50（c）星号Mo <= 200; （d）Ti星号N <= 2星号10-4。独立索赔也包括在内; （a）用这种方法获得的带或工件; （b）装有至少一条上述条的传动带; （c）由这种工件构成的集成电路的支撑格栅。
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