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首页> 外文期刊>Philosophical Magazine Letters >Yielding and strain hardening in aluminium single-crystal foils subjected to tension and bending
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Yielding and strain hardening in aluminium single-crystal foils subjected to tension and bending

机译：受拉和弯曲的铝单晶箔的屈服和应变硬化

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A series of tensile and microbend tests were conducted on aluminium single-crystal foil specimens with different thicknesses ranging from 20 to 90 µm. Two different crystal orientations relative to the tensile direction were considered in the tests: one is an orientation that was excepted to activate at least four slip systems on four different slip planes, and the other is an orientation that was expected to activate only a single-slip system. In the tensile tests, typical size dependence of initial yield strength was observed. The microbend test method was extended to include a reversal of bending direction. Using the curves of bending moment normalized by the square of foil thickness versus surface strain, which were obtained from the reversed bending tests, the total amounts of strain hardening were divided into isotropic and kinematic hardening components. In the microbend tests, a pronounced size-dependent kinematic hardening behaviour was clearly observed; meanwhile, the amounts of isotropic hardening were very small, particularly for the single-slip orientation.View full textDownload full textKeywordssize effect, strain gradient, Bauschinger effect, kinematic hardeningRelated 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/10.1080/09500839.2012.691214
机译：一系列的拉伸和微弯试验对厚度从20到90微米不等的铝单晶箔试样进行了测试。在测试中考虑了相对于拉伸方向的两种不同的晶体取向：一种是除了可以激活四个不同滑移面上的至少四个滑移系统之外的取向，另一种是可以预期仅激活一个单向晶体的取向。滑移系统。在拉伸试验中，观察到初始屈服强度的典型尺寸依赖性。微弯测试方法扩展到包括弯曲方向的反转。使用通过反向弯曲试验获得的，由箔厚度对表面应变的平方归一化的弯曲力矩曲线，将应变硬化总量分为各向同性和运动硬化成分。在微弯试验中，明显观察到了明显的尺寸依赖性运动硬化行为。同时，各向同性的硬化量非常小，尤其是对于单滑动方向。查看全文下载全文关键词大小效应，应变梯度，鲍辛格效应，运动硬化相关var addthis_config = {ui_cobrand：“ Taylor＆Francis Online”，services_compact：“ citeulike，netvibes，twitter，technorati，美味，linkedin，facebook，stumbleupon，digg，google，更多”，发布：“ ra-4dff56cd6bb1830b”};添加到候选列表链接永久链接http://dx.doi.org/10.1080/09500839.2012.691214

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