摘要
研究了高镍铬合会铸铁热轧辊用材料的裂纹形成和在热循环４０和７０周次后裂纹的扩展过程。结果表明：稀土元素的加入，能明显提高高镍铬合金铸铁热轧辊用材料的抗热疲劳性能，使裂纹出现时冷热循环次数提高４２％～１６３％。同时给出稀土加入量以０．０５ｗｔ％～０．１５ｗｔ％为宜。
The effect of rare earth (RE) on crack forming and developing during thermal fatigue test was investigated with the spcimens of hot rolled high Ni-Cr alloy cast iron. The experimental results show that the serviceable life of hot rolled high Ni-Cr alloy cast iron after being cycled 40 times and 70 times can be improved. The number of cycle for crack appeared on speciment surface was increasedby 42% ￣ 163%. It is conclused that the optimum amount of RE addition is about 0. 05 wt%￣0. 15 wt%.
出处
《中国稀土学报》
CAS
CSCD
北大核心
1996年第1期52-55,共4页
Journal of the Chinese Society of Rare Earths
