| 简介 |
The invention relates to parts made of austenitic cast iron that has an increased carbon content, has TRIP/TWIP properties, and contains more than 0.15 percent and up to 0.6 percent of carbon, more than 0.1 percent and up to 0.5 percent of nitrogen, more than 2 percent and up to 22 percent of manganese, 0 to 4 percent of nickel, more than 2 percent and up to 14 percent of chromium, 0.5 to 4 percent of molybdenum, more than 0 percent and up to 2 percent of aluminum, more than 0.5 percent and up to 4 percent of silicon, 0 to 2 percent of niobium, 0 to 1 percent of tantalum, 0 to 3 percent of titanium, 0 to 1 percent of vanadium, 0.01 to 0.5 percent of zirconium, and a total of 0 to 0.8 percent of the rare earth metals yttrium, cerium, and/or lanthanum, the remainder consisting of iron and steel production-related impurities. The part has a TRIP effect under stress such that a phase transition occurs when the part is deformed or damaged, said phase transition resulting in an increased tensile strength, breaking elongation, and notched bar impact work. The invention further relates to methods for producing said parts as well as the use thereof. |
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