期刊
PHILOSOPHICAL MAGAZINE
卷 93, 期 21, 页码 2749-2758出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/14786435.2013.786192
关键词
hot isostatic pressing (HIP); bending test; nanoindentation; aluminum alloys; finite element analysis
类别
资金
- US Department under the Energy Global Threat Reduction Initiative Reactor Convert program
- National Nuclear Security Administration of the US Department of Energy [DE-AC52-06NA25396]
We report on the strength of Al-Al interfaces and the effects of chemical segregation and interfacial void formation on bond strength using microcantilever bend testing. Interfaces are synthesised via hot isostatic pressing. Microcantilevers of several nominal dimensions were fabricated via focused ion beam and deformed in a nanoindenter. We find increased cantilever strength as a function of decreasing sample size, with a linear dependence of the yield strength on the inverse square root of the length scale characteristic to the cantilever cross-section. The presence of pores and chemical segregation decreases the yield strength of the material by 17% and the accommodated strain energy by 10-15% for strain values in the 6-12% range.
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