High-strength austenitic stainless steel for automobile frames and manufacturing method thereof
A technology of austenitic stainless steel and automobile frame, which is applied in the field of high-strength austenitic stainless steel for automobile frame and its manufacturing field, can solve the problems of large elongation loss, high material cost and high cost, so as to ensure corrosion resistance. Properties and mechanical properties, annealing temperature optimization, effect of high tensile strength
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[0075] The present invention will be further described below in conjunction with embodiment.
[0076] The composition of the high-strength austenitic stainless steel for automobile frame of the present invention is shown in Table 2, and the balance is Fe and unavoidable impurities. See Table 3 and Table 4 for key process control parameters in the manufacturing process.
[0077] At the same time, by figure 1 It can be seen that when the reduction of conditioning rolling is controlled below 20%, the trend of impact energy reduction is not obvious as the test temperature decreases. When the test temperature reaches -40°C, the impact energy is only slightly The impact value is lower than that at room temperature, which means that even if the material is used to make passenger car frames or automotive structural parts in extremely cold environments, the material still has good low-temperature toughness and will not cause brittle fracture.
[0078] From the above description and t...
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