Ti-Zr-M(M=Si，Co)三元系合金相图773K等温截面的开题报告.docxVIP

Ti-Zr-M(M=Si，Co)三元系合金相图773K等温截面的开题报告

1.Introduction

Ti-Zr-M(M=Si,Co)ternaryalloysystemisapromisingmaterialforengineeringapplicationsduetotheirexcellentmechanical,thermal,andcorrosionproperties.Theternaryphasediagramforthissystemhasnotbeenfullyestablished,especiallyat773Kisotherm.Therefore,thisresearchaimstoinvestigatethephaseequilibriumofTi-Zr-Msystemat773Kisothermandconstructtheisothermalsectionoftheternaryphasediagram.

2.Objective

TheobjectiveofthisresearchistodeterminethephaseequilibriumofTi-Zr-M(M=Si,Co)systemat773Kisothermandconstructtheisothermalsectionoftheternaryphasediagram.

3.Methodology

Thefollowingmethodologywillbeusedinthisresearch:

-PreparationofTi-Zr-M(M=Si,Co)ternaryalloysbyarcmelting

-Characterizationoftheas-castmicrostructuresusingopticalmicroscopeandscanningelectronmicroscope(SEM)

-X-raydiffraction(XRD)analysistoidentifythephasespresentinthealloys

-Heattreatmentofselectedalloysat773Ktoestablishthephaseequilibriumandconstructtheisothermalsectionoftheternaryphasediagram

-Thermalanalysistechniquessuchasdifferentialscanningcalorimetry(DSC)andthermogravimetricanalysis(TGA)willbeemployedtodeterminethethermalstabilityofthevariousphasespresentintheTi-Zr-Malloys.

4.ExpectedOutcomes

Theexpectedoutcomesofthisresearchare:

-DeterminationofthephaseequilibriumofTi-Zr-M(M=Si,Co)systemat773Kisotherm

-Constructionoftheisothermalsectionoftheternaryphasediagram

-Identificationofthestableandmetastablephasespresentinthealloys

-AnalysisofthethermalstabilityofthephasespresentintheTi-Zr-Malloys.

5.Significance

ThephasediagramofTi-Zr-M(M=Si,Co)ternaryalloysystemat773Kisothermhasnotbeenfullyestablished.Theresultsofthisresearchwillprovideabetterunderstandingofthephasestabilityofthisalloysystematelev