运用动态力学分析仪(DMA)测量了惰性气体冷凝原位温压固结制备的纳米晶Fe-25%Ni (原子分数)块材的滞弹性谱, 测试温度在20---400 ℃之间.观察到200 ℃附近有一 内耗峰, 并伴随有模量的软化. X射线衍射结果表明, 此峰与应力 诱发马氏体逆相变有关. 讨论了模量随温度的升高而升高的异常变化.
The anelasticity spectrum of a nano-grained Fe-25%Ni (atomic fraction) bulk prepared by an inert gas condensation and $in~situ$ warm consolidation technique was measured in the 20--400 ℃ temperature range by means of a dynamic mechanical analyzer (DMA). An internal friction peak accompanied with soft modulus was observed near 200 ℃. It was proved by XRD results that the peak was associated with the reverse phase transformation of stress-induced martensite. The abnormal modulus-temperature spectrum was observed and discussed.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | |
| [8] | |
| [9] | |
| [10] | |
| [11] |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%