{"title":"高分辨率测量裂纹尖端塑料区大小选定区域通道模式","authors":"A. Tekin, J.W. Martin","doi":"10.1016/0026-0800(89)90018-9","DOIUrl":null,"url":null,"abstract":"<div><p>Selected area channelling patterns (SACPs) have been used to measure plastic zones (PZ) associated with fatigue cracks in a nickel-based superalloy MA6000. Refinement of the technique has enabled the PZ dimension to be measured to within ±0.5 μm, which represents an order of magnitude improvement on previously reported work.</p><p>It has been shown, in a series of fatigue tests at various frequencies and temperatures, that the size of the plastic zone at a given value of ΔK varies with the square root of the crack propagation rate.</p></div>","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"22 1","pages":"Pages 1-14"},"PeriodicalIF":0.0000,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0026-0800(89)90018-9","citationCount":"19","resultStr":"{\"title\":\"High-resolution measurement of crack-tip plastic zone sizes by selected area channelling patterns\",\"authors\":\"A. Tekin, J.W. Martin\",\"doi\":\"10.1016/0026-0800(89)90018-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Selected area channelling patterns (SACPs) have been used to measure plastic zones (PZ) associated with fatigue cracks in a nickel-based superalloy MA6000. Refinement of the technique has enabled the PZ dimension to be measured to within ±0.5 μm, which represents an order of magnitude improvement on previously reported work.</p><p>It has been shown, in a series of fatigue tests at various frequencies and temperatures, that the size of the plastic zone at a given value of ΔK varies with the square root of the crack propagation rate.</p></div>\",\"PeriodicalId\":100918,\"journal\":{\"name\":\"Metallography\",\"volume\":\"22 1\",\"pages\":\"Pages 1-14\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1989-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0026-0800(89)90018-9\",\"citationCount\":\"19\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Metallography\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0026080089900189\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metallography","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0026080089900189","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
High-resolution measurement of crack-tip plastic zone sizes by selected area channelling patterns
Selected area channelling patterns (SACPs) have been used to measure plastic zones (PZ) associated with fatigue cracks in a nickel-based superalloy MA6000. Refinement of the technique has enabled the PZ dimension to be measured to within ±0.5 μm, which represents an order of magnitude improvement on previously reported work.
It has been shown, in a series of fatigue tests at various frequencies and temperatures, that the size of the plastic zone at a given value of ΔK varies with the square root of the crack propagation rate.
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