退火温度对DC05EK搪瓷用钢贮氢性能的影响

研究了DC05EK冷轧搪瓷用钢板贮氢能力随退火温度的变化规律，分析了析出物对氢渗透时间的影响.结果表明:随着退火温度的升高，小尺寸析出物数量减少，降低了实验钢的贮氢能力，氢渗透时间缩短.退火温度在730~850℃之间，随着退火温度的提升，1mm厚实验钢板的氢渗透时间从165min下降到119min；退火温度升高至870℃，由于细小弥散析出物的反向溶解，导致氢渗透时间急剧缩短为36min，贮氢能力不足;DC05EK冷轧搪瓷用钢合适的连续退火温度范围是730~850℃.

Effects of Annealing Temperature on Hydrogen Storage Ability of DC05EK Enamel Steel

The variations of the hydrogen storage ability of the enamel steel DC05EK with the annealing temperatures were studied. The effects of the precipitate behaviour on the hydrogen permeation time were studied at different annealing temperatures. The results showed that with the increase of the annealing temperature， the ability of hydrogen storage of the test steel was reduced and the hydrogen permeation time shortened due to the decrease of the amount of small sized precipitates. When the annealing temperature increased from 730℃ to 850℃， the hydrogen permeation time reduced from 165min to 119min. When the annealing temperature was 870℃， the hydrogen permeation time rapidly reduced to 36min and the hydrogen storage ability was lack， which caused by the dissolve of small sized precipitates. The optimal continuous annealing temperature for the enamel steel DC05EK is 730~850℃.