BS ISO 7539-9-2003 金属和合金的腐蚀.应力腐蚀试验.在加大荷载或加大位移条件下试验用预裂样品的制备和使用

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【英文标准名称】:Corrosionofmetalsandalloys-Stresscorrosiontesting-Preparationanduseofpre-crackedspecimensfortestsunderrisingloadorrisingdisplacement
【原文标准名称】:金属和合金的腐蚀.应力腐蚀试验.在加大荷载或加大位移条件下试验用预裂样品的制备和使用
【标准号】:BSISO7539-9-2003
【标准状态】:作废
【国别】:英国
【发布日期】:2003-05-02
【实施或试行日期】:2003-05-02
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;试验;合金;张应力裂纹腐蚀;应力腐蚀;加宽;金属;腐蚀试验;焊接结构;试样制备
【英文主题词】:Alloys;Corrosion;Corrosiontests;Definition;Definitions;Materialstesting;Metals;Specimenpreparation;Stresscorrosion;Tensioncrackcorrosion;Testing;Tests;Weldedstructures;Widening
【摘要】:1ThispartofISO7539coversproceduresfordesigning,preparingandusingpre-crackedspecimensforinvestigatingthesusceptibilityofmetaltostresscorrosioncrackingbymeansoftestsconductedunderrisingloadorrisingdisplacement.TestsconductedunderconstantloadorconstantdisplacementaredealtwithinISO7539-6.Theterm"metal"asusedinthispartofISO7539includesalloys.2Becauseoftheneedtoconfineplasticitytothecracktip,pre-crackedspecimensarenotsuitablefortheevaluationofthinproductssuchassheetorwireandaregenerallyusedforthickerproductsincludingplate,barandforgings.Theycanalsobeusedforpartsjoinedbywelding.3Pre-crackedspecimensmaybestressedquantitativelywithequipmentforapplicationofamonotonicallyincreasingloadordisplacementattheloadingpoints.4Aparticularadvantageofpre-crackedspecimensisthattheyallowdatatobeacquiredfromwhichcriticaldefectsizes,abovewhichstresscorrosioncrackingmayoccur,canbeestimatedforcomponentsofknowngeometrysubjectedtoknownstresses.Theyalsoenableratesofstresscorrosioncrackpropagationtobedetermined.5Aprincipaladvantageofthetestisthatittakesintoaccountthepotentialimpactofdynamicstrainingonthethresholdforstresscorrosioncracking.6Atsufficientlylowloadingrates,theKISCCdeterminedbythismethodcanbelessthanorequaltothatobtainedbyconstantloadordisplacementmethodsandcanbedeterminedmorerapidly.
【中国标准分类号】:H25
【国际标准分类号】:77_060
【页数】:34P.;A4
【正文语种】:英语