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随着工业的飞速发展,就要求各种各样的耐热材料以满足工业上的需要。这些材料必须能长期地、安全可靠地在一定的高温下工作,而且在高温下应具有较高的耐热性能——耐高温的氧化能力及在高温下抵抗塑性变形的能力。蠕动性就是金属及合金在高温下抵抗塑性变形(发生塑性变形)的性能。虽然金属及合金所受之应力还低于甚至远低于该温度下的流动极限(屈伏应力),但就是由于这一应力的作用及所处高温的作用使金属及合金发生连续地塑性变形而生蠕动现象。虽然,蠕动性是耐热材料的最重要性能之一。在高温并受一定应力下工作的由耐热材料制成的零件和机件有很
With the rapid development of industry, a variety of heat-resistant materials are required to meet industrial needs. These materials must work long-term, safely and reliably at high temperatures and should have high heat resistance at high temperatures - high temperature oxidation resistance and resistance to plastic deformation at high temperatures. Creep is the resistance of metals and alloys to plastic deformation (plastic deformation) at high temperatures. Although the stress on metals and alloys is lower than or far below the flow limit (yield stress) at this temperature, it is due to the effect of this stress and the high temperature at which the metal and alloy are continuously plastically deformed Peristalsis phenomenon. Although, creep is one of the most important properties of heat-resistant materials. Parts and parts made of heat-resistant materials that work under high temperature and under a certain stress are available