学科分类
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2 个结果
  • 简介:ThehomogeneousplasticflowoffullyamorphousandpartiallycrystallizedZr41.2Ti13.8Cu12.5Ni10Be22.5bulkmetallicglass(Vitl)hasbeeninvestigatedbycompressiontestsathightemperaturesinsupercooledliquidregion.Experimentalresultsshowthatatsufficientlylowstrainrates,thesupercooledliquidofthefullyamorphousalloyrevealsNewtonianflowwithalinearrelationshipbetweentheflowstressandstrainrate.Asthestrainrateisincreased,atransitionfromlinearNewtoniantononlinearflowisdetected,whichcanbeexplainedbythetransitionstatetheory.Overtheentirestrainrateintervalinvestigated,however,onlynonlinearflowispresentinthepartiallycrystallizedalloy,andtheflowstressforeachstrainrateismuchhigher.Itisfoundthatthestrainrate-stressrelationshipforthepartiallycrystallizedalloyatthegiventemperatureof646Kalsoobeysthesinhlawderivedfromthetransitionstatetheory,similartothatoftheinitialhomogeneousamorphousalloy.Thus,itisproposedthattheflowbehaviorofthenanocrystalline/amorphouscompositeat646Kismainlycontrolledbytheviscousflowoftheremainingsupercooledliquid.

  • 标签: Zr41.2Ti13.8Cu12.5Nil0Be22.5 多成分合金