基于BP神经网络的TA15钛合金加工图  

Processing map of TA15 titanium alloy based on BP neural network

作　　者：王洋[1] 朱景川[1] 尤逢海 岳洋[1] 

机构地区：[1]哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150001 [2]北京航星机器制造公司,北京100013

出　　处：《材料热处理学报》2009年第2期195-197,共3页Transactions of Materials and Heat Treatment

摘　　要：通过热压缩试验得到了TA15钛合金在不同条件下的流动应力。以温度、应变、应变速率为输入变量,以流动应力为输出变量,建立了BP神经网络。进而利用训练好的BP神经网络建立了TA15钛合金的加工图。利用Prasad判据划分出流动稳定区与流动失稳区,并通过组织观察进行验证,从而可以为实际加工工艺的制定提供参考。The values of flow stress of TA15 titanium alloy at different conditions were obtained throngh thermal compressive tests. The temperature, strain and strain rate were defined as input variable and the flow stress was defined as output variable. Thus a BP neural network was set up. Based on the neural network, the processing map of TA15 titanium ahoy was obtained. The stable and instable regimes were evaluated using the criterion postulated by Prasad and vertified by metallographical observation. The processing map can offer a reference to prictical processing technology.

关 键 词：TA15钛合金 神经网络 加工图 

分 类 号：TG146.2[一般工业技术—材料科学与工程]