کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1579162 | 1514824 | 2010 | 6 صفحه PDF | دانلود رایگان |
Laves phases are the most abundant intermetallic phases. However, their mechanical properties are only poorly understood due to difficulties in producing defect-free samples which are large enough for mechanical testing. By using a modified cold crucible levitation melting technique with in situ heat treatment and subsequent defined cooling, massive and large bars of several hundreds of grams of brittle and high-melting Laves phases were produced. Metallographic investigation revealed single- or near single-phase microstructures and a homogeneous chemical composition within the cast ingots with a diameter of 15 mm and of more than 100 mm length. With these high-quality bars it is now possible to prepare large samples that can be used for obtaining mechanical data of these phases.
Research highlights▶ Cold crucible melting with in situ heat treatment applied for brittle intermetallics. ▶ Crack-poor, single-phase Laves phase material for large samples is produced. ▶ Mixing materials with high gradients of melting points are unproblematic. ▶ Temperature dependant Young's modulus measurement is applied for the first time.
Journal: Materials Science and Engineering: A - Volume 527, Issues 29–30, 15 November 2010, Pages 7848–7853