【英文标准名称】:Corrosionofmetalsandalloys-Stresscorrosiontesting-Part9:Preparationanduseofpre-crackedspecimensfortestsunderrisingloadorrisingdisplacement(ISO7539-9:2003);GermanversionENISO7539-9:2008
【原文标准名称】:金属和合金的腐蚀.应力腐蚀试验.第9部分:在提升荷载或提升位移下试验用预裂试样的制备和使用
【标准号】:DINENISO7539-9-2008
【标准状态】:现行
【国别】:德国
【发布日期】:2008-08
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:合金;腐蚀;腐蚀试验;定义;材料测试;金属;试样制备;应力腐蚀;张应力裂纹腐蚀;测试;焊接结构;加宽
【英文主题词】:Alloys;Corrosion;Corrosiontests;Definition;Definitions;Materialstesting;Metals;Specimenpreparation;Stresscorrosion;Tensioncrackcorrosion;Testing;Weldedstructures;Widening
【摘要】:1.1ThispartofISO7539coversproceduresfordesigning,preparingandusingpre-crackedspecimensforinvestigatingthesusceptibilityofmetaltostresscorrosioncrackingbymeansoftestsconductedunderrisingloadorrisingdisplacement.TestsconductedunderconstantloadorconstantdisplacementaredealtwithinISO7539-6.Theterm"metal"asusedinthispartofISO7539includesalloys.1.2Becauseoftheneedtoconfineplasticitytothecracktip,pre-crackedspecimensarenotsuitablefortheevaluationofthinproductssuchassheetorwireandaregenerallyusedforthickerproductsincludingplate,barandforgings.Theycanalsobeusedforpartsjoinedbywelding.1.3Pre-crackedspecimensmaybestressedquantitativelywithequipmentforapplicationofamonotonicallyincreasingloadordisplacementattheloadingpoints.1.4Aparticularadvantageofpre-crackedspecimensisthattheyallowdatatobeacquiredfromwhichcriticaldefectsizes,abovewhichstresscorrosioncrackingmayoccur,canbeestimatedforcomponentsofknowngeometrysubjectedtoknownstresses.Theyalsoenableratesofstresscorrosioncrackpropagationtobedetermined.Q1.5Aprincipaladvantageofthetestisthatittakesintoaccountthepotentialimpactofdynamicstrainingonthethresholdforstresscorrosioncracking.1.6AtsufficientlyIowloadingrates,theKiSCCdeterminedbythismethodcanbelessthanorequaltothatobtainedbyconstantloadordisplacementmethodsandcanbedeterminedmorerapidly.
【中国标准分类号】:H25
【国际标准分类号】:77_060
【页数】:36P.;A4
【正文语种】:德语