Isothermal compression flow stress prediction of Ti-6Al-3Nb-2Zr-1Mo alloy based on BP-ANN

Home > Archive>Volume 45, Issue 6, 2016 >1549-1553

Isothermal compression flow stress prediction of Ti-6Al-3Nb-2Zr-1Mo alloy based on BP-ANN
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Affiliation:State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an,Western Superconducting Technologies Co., Ltd., Xi’an,State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an,Western Superconducting Technologies Co,Ltd,Xi’an,Western Superconducting Technologies Co., Ltd., Xi’an,State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an,State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an,State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an
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Fund Project:National International Scientific and Technological Cooperation Projects (2013DFB50180); Shaanxi Province Science and Technology Integrated Innovation Project (2015KTTSG01-08)

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Abstract:

Elevated-temperature flow behavior of Ti-6Al-3Nb-2Zr-1Mo titanium alloy was investigated by conducting isothermal hot compression tests at strain rate from 0.001 to 1 s-1 and in the temperature range of 820~970 ℃ on Gleeble-3800 simulator. The BP-ANN and regression models were established based on the experimental flow stress. Results show that the absolute value of maximum relative error obtained from the ANN model and regression method were 4.35% and 13.9%, respectively. The average absolute relative errors are 1.42% and 6.53% corresponding to the ANN model and regression method, which demonstrates that BP-ANN has a better prediction precision, and it can be used as the constitutive model of Ti-6Al-3Nb-2Zr-1Mo titanium alloy.

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[Chen Haisheng, Feng Yong, Ma Fanjiao, Mao Youchuan, Liu Xianghong, Zhang Pingxiang, Kou Hongchao, Fu Hengzhi. Isothermal compression flow stress prediction of Ti-6Al-3Nb-2Zr-1Mo alloy based on BP-ANN[J]. Rare Metal Materials and Engineering,2016,45(6):1549~1553.]
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Received:December 02,2015
Revised:March 13,2016
Adopted:March 25,2016
Online: October 08,2016
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