学科分类
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6 个结果
  • 简介:TheeffectofLaelementonthemechanicalpropertiesandconstitutionnearbygrainboundaryinaCo-basesuperalloyCo-22Ni-22Cr-14kduring760℃ageinghasbeeninvestigatedbyAESandmaterialtesting.ResultsshowthatelementLacanbeinastateofsolidsolutionandsegregatesmainlyatthevicinityofgrainboundaries.ThepriorsegregationofLaatomscanaffectsegregationbehaviourofotherelements,sothatexertsinfluenceonmicrostructureofthealloy,ParticularlyincreasingofLacontentcandecreasePconcentrationatthevicinityofgrainboundariesbutnotdecreaseSconcentration.StogetherwithLaproducecosegregationeffect.ThecontentofLahasnoobviouseffectonhightemperaturestrength.WhenthecontentofLacomesupto0.02wt-%,itcanobviouslyimprovethehightemperatureductility.

  • 标签: LA Co-base SUPERALLOY SEGREGATION
  • 简介:五分钱底单身者水晶合金DD8的微结构稳定性被调查了。标准热对待在在当演员组下面的950°C.While的显示出的好微结构稳定性调节的标本,一种像杆的阶段猛抛在内部当演员组标本的树枝状的区域在热暴露期间。阶段,让电子消息传输方式组织,与也预言的Cr.Thermo计算被充实在Cr富有的电子消息传输方式分阶段执行的约950°C.The的一个电子消息传输方式阶段的降水被看作alpha-Cr并且在当演员组条件下面由于Cr的分离形成了。

  • 标签: 微观结构 稳定性 单晶体 曝光量
  • 简介:磷的分离和在IN706合金的谷物边界的磷化物的降水上的磷内容和热处理的效果被调查了。磷化物有MNP的stoichiometry(M=Nb,Ti和N=Ni,Fe,Cr)并且斜方晶的水晶结构。在IN706合金的谷物矩阵的磷的溶解度决心在0.008%和0.013%之间。当为打印的3-D的表面修正在980l浸泡了时,植入。在这研究,有毛孔的圆柱的多孔的Ti6Al4V(Ti64)脚手架640缩放吗??

  • 标签: 磷化物 IN706 合金 谷物边界分离
  • 简介:形成的激光固体(LSF)扔的Inconel718superalloys是在顺序(SITA热处理)与答案处理,中间的热处理(IHT)和二阶段的老化处理对待的热。微观结构,张力的性质和在500袠的LSFedInconel718superalloy的槽口敏感上的IHT温度的效果??

  • 标签: INCONEL 热处理温度 718合金 高温合金 固体激光 微观结构
  • 简介:AnoverlaycoatingmaterialwasdepositedonasinglecrystalsuperalloySRR99bylasercladding.Themicrostructureandoxidationbehaviorofthiscoatingwasinvestigatedthroughscanningelectronmicroscopy(SEM)andX-raydiffraction(XRD).Theresultsindicatedthatalthoughthecompositionofthecoatingwaschosenbasedontheγ'compositioninReneN5superalloy,theprimarysolidificationphaseofthiscoatingduringlasercladdingwasγ-Ni.Furthermore,underthelasercladdingcondition,fineparalleldendritesgrewepitaxiallyinthecoatingfromthesubstrate,indicatingthesinglecrystalstructureofthesubstratewasreproduced.WhenthesinglecrystalMCrAlYcoatingwasoxidizedat1000,bothB-AI2O3and(Y-Al2O3formedduringinitialoxidationprocess.Astheoxidationtimeproceeded,thepreseneeof0-Al2O3facilitatedtheformationofNiAl2O4spineloxide.Oncethespinelwasobserved,itflourishedandinducedsomeporosityinthescale.Whenthescalethicknessincreasedto6-7μm,largeareaspallationofthescalebegan.

  • 标签: Laser CLADDING Single crystal growth EPITAXY