内耗法研究退火温度对含钒BH钢中固溶C原子浓度的影响  

INFLUENCE OF ANNEALING TEMPERATURE ON THE SOLUTE CARBON AMOUNT IN BAKE HARDENING STEEL CONTAINING VANDIUM BY INTERNAL FRICTION METHOD

作　　者：阎琦[1] 史文[1] 李麟[1] 刘仁东[2] 王越[2] 刘军友[2] 

机构地区：[1]上海大学材料科学与工程学院,上海200072 [2]鞍山钢铁股份有限公司

出　　处：《上海金属》2011年第5期10-14,共5页Shanghai Metals

基　　金：高性能钢的组织调控理论与技术基础研究(973计划)

摘　　要：采用内耗方法研究退火温度对含钒超低碳烘烤硬化钢间隙固溶C的影响。对试样进行不同温度盐浴退火处理后,通过内耗法测量Snoek峰来研究固溶C随退火温度的变化规律,并测量相应的BH值和晶粒尺寸变化规律。研究结果显示:含V超低碳烘烤硬化钢在750～810℃盐浴退火,随着退火温度的升高,Snoek峰先逐渐下降后略有升高,间隙固溶C含量亦先减小后增加;但随着退火温度的进一步提高,间隙固溶C的浓度增加,内耗峰又有所上升,此结果与BH值对比取得了较好的一致性。此外随着内耗测试频率的降低,内耗与固溶C含量的比例系数K也随之降低。The influence of annealing temperature on the solute carbon amount in bake hardening steel was studied by internal friction.The snoek peak was measured to study the variation of solute carbon with the annealing temperature by internal friction after annealed in salt furnace,also the BH values and grain sizes were measured.It showed that the snoek peak and the amount of solute C decreased with the increasing of annealing temperature firstly,then increased when the steels were annealed at 750～810 ℃.The internal friction test result made great agreement with BH value.The coefficient K decreased with the increasing of measuring frequency.

关 键 词：含钒烘烤硬化钢 Snoek峰 内耗 固溶碳 

分 类 号：TG146.21[一般工业技术—材料科学与工程]