研究了液淬工艺参数和添加微量稀土元素Ce对非晶态Fe—B—Si合金热稳定性的影响.结果表明,制备非晶条带时的液淬速率愈高,在低温退火时合金的结构弛豫过程愈难进行;而非晶晶化与液淬条件之间不存在直接的联系.Ce的适量添加,在低温阶段延迟了结构弛豫过程中非晶条带延─脆转变的发生;在高温阶段使合金开始晶化的温度降低,且作用效果与条带中Ce的含量成正比.
The influences of melt spun parameters and dricro-addition of cerium on thermal stability of amorphous Fe-B-Si alloys have been studied. The higher cooling speed foras-quenched amorphous ribbon, the more difficult for structural relaxation in low-temperatureannealing process. Experimental results show no direct relationship between the quenching condition and crystallization for Fe80B11.5Si8.5 metallic glass. Optimal addition of cerium obviouslyretard the ductile-to-brittle transition process in structural relaxation stage, when annealingtemperature is low. At high temperature annealing stage, the addition of cerium lowers the onsettemperature of crystallization; and this effect is in direct proportion to the content of cerium inribbons.
参考文献
[1] | |
[2] | |
[3] | |
[4] | |
[5] | |
[6] | |
[7] | |
[8] | |
[9] | |
[10] | |
[11] |
- 下载量()
- 访问量()
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%