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《Journal of Functional Materials》 2006-06
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The application of BP model in predicting porosity and compressive yield strength of porous NiTi alloy

LI Qiang~(1,2),YU Jing-yuan~1,MU Bai-chun~(1,2),SUN Xu-dong~1(1.College of Material & Metallurgy,Northeastern University,Shenyang 110004,China;2.College of Materials & Chemical Engineering,Liaoning Institute of Technology,Jinzhou 121001,China)  
Based on BP neutral network theory,the model has been developed for the prediction of porosity and compressive yield strength of porous NiTi shape memory alloy(SMA) prepared by thermal explosion.The results indicate that the model is capable of reproducing the effects of changes in temperature,particle size of Ti and green density on product porosity and compressive yield strength.When temperature,particle size of Ti and green porosity changed,the product properties are predicted.Good agreement between predicted and experimental data is obtained.So the model can be used in the quality control of porous NiTi SMA.By the proper adjustment of the properties,porous NiTi SMA can better match the replaced tissue.This way can improve the efficiency and reduce the cost.
【Fund】: 国家杰出青年基金资助项目(50425413);; 国家自然科学基金资助项目(50372009);; 辽宁教育厅基金资助项目(20031008)
【CateGory Index】: TB383.4
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