采用Gleeble-1500热模拟实验机对38MnVS6非调质钢在温度为950～1200℃、应变速率为0.01～5s-1进行等温、等应变速率热压缩实验.依据实验所获得的流动应力曲线,分别采用双曲正弦形式的Arrhenius方程和BP人工神经网络模型建立该种钢的高温本构模型.分别统计计算两种模型预测值与实验值之间的相关系数和平均相对误差.结果表明:神经网络模型具有更高的精度,更适合用于该种钢的高温流动应力预测.
参考文献
| [1] | U.S. Dixit;S.N. Joshi;J.P. Davim .Incorporation of material behavior in modeling of metal forming and machining processes: A review[J].Materials & design,2011(7):3655-3670. |
| [2] | Y.C. Lin;Xiao-Min Chen .A critical review of experimental results and constitutive descriptions for metals and alloys in hot working[J].Materials & design,2011(4):1733-1759. |
| [3] | LAASRAOUI A;JONAS J J .Prediction of steel flow stresses at high temperatures and strain rates[J].Metallurgical Transactions A,1991,22(7):1545-1558. |
| [4] | SELLARS C M;TEGART W J M .On the mechanism of hot deformation[J].ACTA METALLURGICA,1966,14(9):1136-1138. |
| [5] | Ji, G.;Li, F.;Li, Q.;Li, H.;Li, Z. .A comparative study on Arrhenius-type constitutive model and artificial neural network model to predict high-temperature deformation behaviour in Aermet100 steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2011(13/14):4774-4782. |
| [6] | Lin YC;Zhang J;Zhong J .Application of neural networks to predict the elevated temperature flow behavior of a low alloy steel[J].Computational Materials Science,2008(4):752-758. |
| [7] | 常开地,王萍,刘卫萍.非调质钢的发展现状和应用进展[J].金属热处理,2011(03):80-85. |
| [8] | 缪桃生,蒋鹏.非调质钢在汽车曲轴、连杆锻件上的应用研究[J].锻压技术,2010(06):1-5. |
| [9] | 王进,褚忠,陈军.38MnVS6非调质钢高温奥氏体流动应力模型研究[J].热加工工艺,2010(20):5-8. |
| [10] | Lin YC;Chen MS;Zhong J .Constitutive modeling for elevated temperature flow behavior of 42CrMo steel[J].Computational Materials Science,2008(3):470-477. |
| [11] | Mandal, S;Rakesh, V;Sivaprasad, PV;Venugopal, S;Kasiviswanathan, KV .Constitutive equations to predict high temperature flow stress in a Ti-modified austenitic stainless steel[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2009(1/2):114-121. |
| [12] | Dipti Samantaray .Constitutive analysis to predict high-temperature flow stress in modified 9Cr-1Mo(P91) steel[J].Materials & design,2010(2):981-984. |
| [13] | Pu ZJ.;Zou D.;Wu KH. .DEVELOPMENT OF CONSTITUTIVE RELATIONSHIPS FOR THE HOT DEFORMATION OF BORON MICROALLOYING TIAL-CR-V ALLOYS[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1995(0):780-787. |
| [14] | Xiao, Y.-H.;Guo, C.;Guo, X.-Y. .Constitutive modeling of hot deformation behavior of H62 brass[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2011(21):6510-6518. |
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%