高铁螺纹道钉用TD16钢的动态再结晶行为
Dynamic Recrystallization Behavior of TD16 Steel for High-speed Railway Screw Spike
摘 要
在变形温度为850~1 150℃、应变速率为0.01~10 s-1下，利用Gleeble-3500型热模拟试验机对高铁螺纹道钉用TD16钢进行了高温压缩试验，研究了其动态再结晶行为，建立了动态再结晶模型并进行了试验验证。结果表明：TD16钢在试验条件下变形过程中存在动态再结晶行为，温度越低、应变速率越大，动态再结晶越不容易发生，动态再结晶晶粒越细；由动态再结晶模型预测得到的峰值应变/临界应变，ε0.5，晶粒尺寸与试验值的最大相对误差分别为7.08%，11.06%，21.3%，均吻合较好，建立的动态再结晶模型可用于预测TD16钢的动态再结晶行为。
TD16钢
动态再结晶
模型
显微组织
high-speed railway screw spike
TD16 steel
dynamic recrystallization
model
microstructure
Abstract
High-temperature compression experiments at deformation temperatures of 850-1 150℃ and strain rates of 0.01-10 s-1 were conducted on TD16 steel for high-speed railway screw spike using a Gleeble-3500 thermal simulation testing machine, and the dynamic recrystallization behavior was studied. The dynamic recrystallization models were established and verified by experiments. The results show that under the experimental conditions, the dynamic recrystallization behavior was observed in the TD16 steel. The dynamic recrystallization hardly occurred and the dynamic recrystallization grains became finer when the deformation temperature rose or the strain rate decreased. The maximum relative errors between the prediction values obtained by the dynamic recrystallization models and tested values of peak and critical strains, ε0.5, and grain size were 7.08%, 11.06%, 21.3%, respectively. The predicted values were all in good agreement with the experimental values, showing that the dynamic recrystallization models can be used to predict the dynamic recrystallization behavior of TD16 steel.
中图分类号 TG142.41 DOI 10.11973/jxgccl201710020
所属栏目 物理模拟与数值模拟
基金项目 国家自然科学基金资助项目（51405248）；国际科技合作项目（CB11-13）；浙江省“新苗人才计划”项目（2015R405073）
收稿日期 2016/11/24
修改稿日期 2017/8/20
网络出版日期
作者单位点击查看
备注曹飞(1989-),男,河南邓州人,硕士研究生
引用该论文: CAO Fei,PENG Wenfei,SHEN Fa,YU Wenjing,SHU Xuedao. Dynamic Recrystallization Behavior of TD16 Steel for High-speed Railway Screw Spike[J]. Materials for mechancial engineering, 2017, 41(10): 91～97
曹飞,彭文飞,沈法,余文静,束学道. 高铁螺纹道钉用TD16钢的动态再结晶行为[J]. 机械工程材料, 2017, 41(10): 91～97
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【6】董岚枫,钟约先,马庆贤,等. 20SiMn钢锻造过程动态再结晶行为研究[J]. 中国机械工程,2008,19(10): 1245-1249.
【7】权国政,石彧,赵磊,等. 42CrMo钢热塑性变形诱导动态再结晶行为的动力学描述[J]. 材料热处理学报,2012,33(10): 155-161.
【8】王良塑,贾书君,刘清友,等. 热压缩变形参数对海底用X70管线钢再结晶行为的影响[J]. 机械工程材料,2016,40(3):102-106.
【9】彭文飞,张建华,余文静,等. 高铁螺纹道钉钢TD16高温塑性变形行为研究[J]. 材料热处理学报,2015,36(8): 243-248.
【10】蔺永诚,陈明松,钟掘. 42CrMo钢的热压缩流变应力行为[J]. 中南大学学报(自然科学版),2008,39(8): 549-553.
【11】张新明,彭卓凯,邓运来, 等. Mg-9Gd-4Y-0.6Mn合金在293~723 K时的变形行为及显微组织演变[J]. 中南大学学报(自然科学版), 2006, 37(2): 223-228.
【12】LIN Y C, CHEN M S, ZHONG J. Prediction of 42CrMo steel flow stress at high temperature and strain rate[J]. Mechanics Research Communications, 2008, 35(3): 142-150.
【13】张毅,许倩倩,李瑞卿,等. 稀土Ce对Cu-Cr-Zr合金高温变形行为的影响[J]. 材料热处理学报,2014,35( 8): 47-53.
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