退火温度对锻造态Fe-Mn-Cr-Co-0.2Nb合金阻尼性能的影响  

The effect of annealingtemperature on the damping capacityin the forged of Fe-Mn-Cr-Co-0.2Nb alloy

作　　者：伍雪松 钱柄男 文玉华[1] WU Xue-song;QIAN Bing-nan;WEN Yu-hua(College of Manufacturing Science and Engineering,Sichuan University,Chengdu 610065,Sichuan,China)

机构地区：[1]四川大学制造科学与工程学院

出　　处：《金属功能材料》2018年第5期7-12,共6页Metallic Functional Materials

基　　金：国家自然科学基金重点项目资助(51671138)

摘　　要：采用金相法、XRD和DSC方法研究了退火温度对锻造态Fe-22Mn-12Cr-4Co-0.2Nb合金微观组织及其对阻尼性能的影响。结果表明：合金在锻造不退火状态下的阻尼性能最好,应变振幅为2×10^-4时,合金的阻尼性能（δ）达到了0.086。随着退火温度的增加,合金的阻尼性能降低。合金的阻尼性能与其γ奥氏体的层错几率呈正相关,但与合金中的ε马氏体的体积分数未观测到明显的正相关。The influence of annealing temperature on the microstructure and damping capacity of Fe-22 Mn-12 Cr-4 Co-2 Nb alloy were studied by metallography,XRD and DSC.The results showed that the damping capacity of the alloy forged without annealing is the best,when the strain amplitude is 2×10^-4,the logarithmic decrement（δ）of the alloy reaches to 0.086.In addition,with the increase of the annealing temperature,the damping capacity of the alloy decreases.The damping capacity of the alloy is positively correlated with the stacking fault probability of theγaustenite.Howerve,there is not a positively correlated relationship between the damping capacity and the volume fraction ofεmartensite in the alloy can be observed.

关 键 词：Fe-Mn-Cr合金 阻尼合金 Ε马氏体 层错几率 阻尼性能 

分 类 号：TG316[金属学及工艺—金属压力加工] TG135[一般工业技术—材料科学与工程] TG156.2[金属学及工艺—合金]