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二元连续固溶体合金交互作用参数与相图的计算机预报 总被引:2,自引:0,他引:2
利用人工神经网络方法讨论了原子参数与二元合金相的交互作用参数的关系,并通过热力学原理与人工神经网络方法的结合计算了二元连续固定溶体合金相图,所计算的相图与实测相图符合得很好。 相似文献
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Wang Xueye Qiu Guanzhou Wang Dianzuo Department of Mineral Engineering Central South University of Technology Changsha P. R. China Li Chonghe Chen Nianyi Shanghai Institute of Metallurgy Chinese Academy of Sciences Shanghai 《中国有色金属学会会刊》1998,(3)
1INTRODUCTIONTheexperimentaldataontheliquiduslinesorsurfacesinbinaryorternarysystemsfromreferencesarealwaysfinite.Sometimest... 相似文献
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1.IntroductionInourpreviouswork,amodifiedMiedemamodelforalloyphasesusingfouratomicparameters(includingtwoatomicparametersark*anda.;/ssusedbyoriginalMiedemamodel,andtwoadditionalparameters,atomicradiusRandValenceelectronnumberZ)havebeenappliedtothestudyofphysicochemicalpropertiesofalloyphases[1,2].Inthiswork,wewilluseasimilarmodeltostudythefactorsthataffecttheentropyofmitingofliquidbinaryalloysystems.2.ModelandComputationMethodsMiedemahasproposedasemi-empiricalmodel(cellularmodel)fortheestim… 相似文献
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热变形参数对Ti-15-3合金显微组织的影响及预测 总被引:9,自引:0,他引:9
通过等温压缩试验和金相分析研究了热变形参数对Ti-15-3(Ti-15V-3Cr-3Sn-3Al)合金固溶处理后显微组织的影响,等效晶粒尺寸随变形温度升高而增大,随变形程度和变形速率增加而减小,再结晶程度随变形温度升高而减小,随变形程度和变形速率增加而增大,采用人工神经网络的方法建立了等效晶粒尺寸及再结晶晶粒体积百分数与变形程度,变形速率和变形温度间的数学模型,预测值与实测值吻合较好,表明该方法很好地预测热变形参数对Ti-15-3合金固溶处理后显微组织的影响。 相似文献
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1 INTRODUCTIONTi 15 3alloyisanewmetastable β typetitani umcharacterizedbyimprovedforgeabilityandcoldformability .Ithasbeenusedextensivelyinaerospaceindustrybecauseofitshighspecificstrength(strength to massrate)whichismaintainedatele vatedtemperature .Inordert… 相似文献
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P. Nash 《Journal of Phase Equilibria》1984,5(1):5-9
The computer representation of phase diagrams is discussed from the point of view of user needs together with the form an ideal system might take for maximum utility. Current work in the field of computer representation of phase diagrams is reviewed and placed in the context of developing a more useful computerized alloy design system. Some new work on computerized interpolation of phase diagram data is also presented. 相似文献
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用人工神经网络构建碳钢、低合金钢大气腐蚀模型 总被引:3,自引:0,他引:3
采用人工神经网络技术建立了碳钢、低合金钢大气腐蚀预测模型,神经网络拓朴结构为13-19-1,神经网络模型预测结果和实验数据紧密相符,而且通过单一因素敏感性分析方法,研究了合金元素和环境因素对于大气腐蚀速率的影响,表明该方法的有效性. 相似文献
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BP神经网络在碳钢、低合金钢海水腐蚀中的应用 总被引:9,自引:0,他引:9
根据实海环境数据及材料腐蚀数据,利用BP结构神经网络建立了碳钢、低合金钢在实海环境中腐蚀速度与环境因素、材料成份之间神经网络预测模型,并探讨了建立预测模型中遇到的一些问题.结果表明该模型可以较准确的预测碳钢、低合金钢在不同海域的腐蚀速度.
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EFFECT OF COLD WORKING ON THE AGING PROPERTIES OF Cu-Cr-Zr-Mg ALLOY BY ARTIFICIAL NEURAL NETWORK 总被引:1,自引:0,他引:1
J.H.Su H.J.Li Q.M.Dong P.Liu B.X.Kang B.H.Tian 《金属学报(英文版)》2004,17(5):741-746
A developmental research has been carried out to deal with the high performance of Cu-Cr-Zr-Mg lead frame alloy by artificial neural network (ANN). Using the cold working to assist in the aging hardening can improve the the hardness and electrical conductivity properties of Cu-Cr-Zr-Mg lead frame alloy. This paper studies the effect of different extent of cold working on the aging properties by a supervised ANN to model the non-linear relationship between processing parameters and the properties. The back-propagation (BP) training algorithm is improved by Levenberg-Marquardt algorithm. A basic repository on the domain knowledge of cold worked aging processes is established via sufficient data mining by the network. The predicted values of the ANN coincide well with the tested data.So an important foundation has been laid for prediction and optimum controlling the rolling and aging properties of Cu-Cr-Zr-Mg alloy. 相似文献
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1.Weldingisacomplicatedprocesswhichisnoallnear,variable--coupledandrandom,soitissodifficulttofindaaccuratelawthatwehavetodependonscientificessaily.Ihrecentyears,autOInationOfarcweldingProcess,whichisbasedoninduStrialrobots,hasbeentakenPublicopinionseriously,andthebasisofconedofweldingPIDCessistoestablishinathernaticalmodelOfweldingprocessandweldingqUality'AtPreSent,weOftenuseformulaOfrecessionexperiencetosatisfytheneedOfweldingtechaology.aamrecessionmodelcanbeusedtOfindstatisticallawout… 相似文献
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.~theSofar,finiteelementmethodhaswidelybeenusedinmetalfoeingprocesses,whichcanhelptoshortenthedevelopmentcycleandreducetheproductcosts.ConstitutiverelationshipisabridgebetweenthedefonnationbehaViorofmaterialsandallkindsOfthermomechanicalparameters,anditisalsoapresupPOsitiontothesimulationOfmetaldeformationprocessesbyusingfiniteelementmethod.Fwhermore,itisusuallynon--linearandcomplex,owingtoavallationinstructUredabingplasticdefonnation,Particularlyoccultinginsupendloys.FOrmanyyears,researche… 相似文献
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Influence and prediction of hot deformation parameters on microstructure of Ti—15—3 alloy 总被引:2,自引:0,他引:2
1 INTRODUCTIONTi 15 3(Ti 15V 3Cr 3Sn 3Al)alloyisanewmetastableβ typetitaniumcharacterizedbyimprovedhighspecificstrengthandcoldformabilit 相似文献
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人工神经网络技术探讨碳钢,低合金钢的实海腐蚀规律 总被引:14,自引:5,他引:9
根据金属海水腐蚀的特征,用人工神经网络技术分析碳钢,低合金钢海水腐蚀数据,建立了碳钢,低合金钢的腐蚀速率与合金的成分及海水间的神经网络模型,可用于预测新钢种在其它海域中的腐蚀速率,并用所建模型分析了合金元素对腐蚀速率的影响。 相似文献