摘要
利用倒扭摆仪研究了经过不同淬火工艺后Fe-13Cr-2.5Mo合金的阻尼性能,并用MTS力学实验机测试了合金的拉伸性能,用JSM-5900LV型扫描电镜分析了晶界析出物的形态及组成。研究发现,在900℃下保温2 h后水冷,合金的拉伸性能较好,抗拉强度为467 MPa,屈服强度为270 MPa,伸长率为23%,同时具有较强的阻尼性能,对数衰减率δ达0.14。在900℃保温2 h的热处理过程中,尽管有析出物析出,但回复和再结晶转变使组织的残余内应力降低,磁弹性能降低,磁畴的移动性增强,阻尼性能提高。
The damping capacity of Fe-13Cr-2.5Mo alloy after different heat-treatment was measured with reversal torsion technique. The MTS machine was used to test tensile properties of the alloy. The precipitation along the grain boundary was investigated by using scan electronic microscope. The experimental results show that after heating at 900 ℃ for 2 h followed by watercooling the alloy has the highest tensile properties and higher damping capacity. The tensile strength was 467 MPa, the yield strength was 270 MPa, and the extensibility was 23%. During the heat-treatment, the internal stress is reduced resulting from the recovery and recrystallization making magnetoelastic energy lower and magnetic domain mobility and damping capacity increase.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2006年第6期48-51,共4页
Journal of Iron and Steel Research
关键词
阻尼合金
内耗
热处理
damping alloy
damping capacity
heat treatment
