Nb-Ti超導(dǎo)合金在熱加工過程中的組織演變規(guī)律.pdf

1、西北工業(yè)大學(xué)碩士學(xué)位論文NbTi超導(dǎo)合金在熱加工過程中的組織演變規(guī)律姓名：潘志強(qiáng)申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料工程指導(dǎo)教師：張平祥曾衛(wèi)東20060701西北工業(yè)大學(xué)碩士論文AbstractBerlincourtfoundsuperconductalloyNb—Tialloyin1962Nb—TialloypromotestudyandapplicationofSuperconductItisequippedonhigh—energyacc

2、elerator，magneticgeneratorandnucleusfusiontesteritisknownthatdensityofcriticalelectriccurrentisveryimportantparameterforsuperconductionDeformingwithdifferentprocessforNbTialloy，DensityofcriticalelectriccurrentwiIibechang

3、edwith23timesSoDeformingwithdifferentprocesscanraisedensityofcriticalelectriccurrentwithhomogenizingstructureanddiminishingsizeofstructureinNbTialloyInthiSarticle，westudydeformingcharacteristicofNb—Tia1]oy，whichsimulater

4、ulesofdeformingandgrainchangingwithdifferentprocessMainlyachievementsasfollows：1Todeterminingcharacteristicparameterforsimulating，thermalsimulatingexperimentationiSdoneonGleeble一1500thermalmachineAscertainingvarietiespha

5、segrainsizeswithdifferentprocess：Accordingtodataofthermalsimutatingpressingexperimentation，constitutiveequationofNb—Tia1]oyisconstitutedbynonlinearregressionequation2WhenNb—Tialloyflat—dieforgingtoadoptingYadamodeltosimu

6、latingreckonphasegrainsizes，tostudyingdeeplyandsystemicvarietymicrostructureofNb—Tialloywithdifferentthermalparameter，toanalyzeanddiscussinfluenceofprocessingparameterformicrostructureevo]vementWiththeevidenceofexperimen