摘要
退火和退火冷却介质对低铬镍钢耐蚀性和显微硬度的影响
作者(年代):Hossam Ibrahim Al-Itawi, Firas Al-Quran为了研究中间球退火对金属某些性能的影响，选择了铬镍合金样品。样品经过渗碳、正火、退火、淬火和回火处理。测定了其在酸性介质中的显微硬度和耐腐蚀性。研究了退火冷却介质的影响。以表征冷却速率对材料性能影响的冷却介质为:炉膛冷却介质;冷却速度慢，空气冷却介质;冷却速度快，且冷却介质为油;冷却速度快。研究了中间球退火对合金性能的影响。结果发现，材料的硬度随退火温度和保温时间的变化而增减，但结果werenÂ′不可预测; each temperature and cooling rate has its pattern. The study shows an increase in the corrosion resistance of the material due mainly to spheroidal annealing process. In general the best result showed samples annealed at 740 ï°C, 60 min. for microhardness, and 740 ï°C, 45 min for corrosion resistance, especially for oil cooling media.
