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采取复合添加硅和钙的方法,强化了晶间粘合力而控制住断裂形态,同时控制住氢的逸出状态,从而开发出延迟断裂性优良的
Taking the method of adding silicon and calcium in combination, the intergranular adhesion is strengthened to control the fracture morphology, and at the same time, the escape state of hydrogen is controlled so as to develop an alloy with excellent delayed fracture property