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奥氏体中锰钢是在高锰钢成分基础上降低含锰量,从而降低奥氏体的稳定性所获得的一种耐磨材料。作者所采用的中锰钢成分在压缩形变条件下产生大量薄片状α马氏体,其加工硬化速度远高于高锰钢。在多冲和磨粒磨损条件下试样表面产生1～1.5mm层厚的形变马氏体,心部保持韧性的奥氏体状态,是一种较理想的耐冲击磨损材料。由于奥氏体中锰钢具有足够韧性、高的耐磨性、低的成本,因此用奥氏体中锰钢代替广泛采用的高锰钢,将会取得重大的经济效益。
Austenitic manganese steel is a wear-resistant material obtained by reducing the amount of manganese in the high manganese steel composition, thereby reducing the stability of austenite. The medium manganese steel used by the author produces a large amount of lamellar α-martensite under the condition of compressive deformation, and its work-hardening speed is much higher than that of high-manganese steel. Under the conditions of multi-punch and abrasive wear, the deformed martensite with a layer thickness of 1 ~ 1.5mm is produced on the surface of the sample, and the austenitic state with the heart maintaining toughness is an ideal impact-resistant wear material. As austenitic manganese steel with sufficient toughness, high wear resistance, low cost, so the use of austenitic manganese steel instead of the widely used high manganese steel, will achieve significant economic benefits.