Measuring the fracture properties of single grain boundaries has until now required macroscopic bi-crystals which are expensive and not always available. We describe a method for fracture testing using micro-cantilevers, manufactured using focussed ion beam machining and tested using a nanoindenter. We have used the method to measure the fracture toughness of selected grain boundaries in bismuth-embrittled copper. This technique is applicable to grain boundaries in other brittle polycrystalline samples for which large bi-crystals cannot be produced for conventional testing.View full textDownload full textKeywordsfracture toughness, grain boundaries, embrittlement, focussed ion beam, nanoindentationRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500839.2011.573813
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机译：迄今为止，测量单晶界的断裂性能一直需要宏观的双晶体，它们昂贵且并不总是可用。我们描述了一种使用微悬臂梁进行断裂测试的方法，该方法使用聚焦离子束加工制造，并使用纳米压头进行测试。我们已经使用该方法来测量铋包埋的铜中选定晶界的断裂韧性。这项技术适用于其他脆性多晶样品的晶界，而传统的测试无法产生大的双晶。查看全文下载全文关键词断裂韧性，晶界，脆化，聚焦离子束，纳米压痕相关var addthis_config = {ui_cobrand：“ Taylor ＆Francis Online”，services_compact：“ citeulike，netvibes，twitter，technorati，delicious，linkedin，facebook，stumbleupon，digg，google，更多”，发布号：“ ra-4dff56cd6bb1830b”};添加到候选列表链接永久链接http://dx.doi.org/10.1080/09500839.2011.573813
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