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parameters and fracture strength of WC-Co cemented carbides[J]. Materials Chemistry and Physics, 2000, 62(1): 35-43.  ......
to itself. On the other hand, bubbles are relatively "fresh" and newly rising with less fracture caused by the pressing. To accurately reflect froth color, environmental light is prevented from reflection......
was observed using an optical microscope. The fracture surface of specimen was analyzed using an electric scanning microscope(SEM). The distribution of alloying elements in micro-area was determined......
the length is too small, and otherwise the outside of tube may fracture with over large length. In this work, bending processes were investigated with the mandrel extension lengths of 10 mm, 15 mm and 19 mm......
左右.因此,合金的硬度和强度都比较高. 图7 超细硬质合金的显微组织 Fig.7 Microstructure of cemented carbides 图8 超细硬质合金的断口形貌 Fig.8 Fracture morphology of cemented carbides 这是由于球形钴粉在球磨过程中更加容易分散,使硬质合金混合......
再结晶发生的主要原因. REFERENCES [1] HAMILTON B C, SAXENA A. Transient crack growth behavior in aluminum alloys C415-T8 and 2519-T87[J]. Engineering Fracture Mechanics, 1999, 62(1): 1-22. [2] DEVINCENT S M......
): 191-198. [9] Ghosh G. Elastic properties, hardness, and indentation fracture toughness of intermetallics relevant to electronic packaging[J]. J Mater Res, 2004, 19(5): 1439-1454. [10] DENG X, KOOPMAN M......
Bai-yun, LU De-zhong, HU Zhuang-qi. Nanostructure at fracture surface of IN718 impact specimen[J]. Chinese Journal of Materials Research, 2003, 17(2): 122-126. [8] DOBROMYSLOV A V, TALUTS N I......
]. Metal Mater Trans A, 2004, 35: 1629-1632. [4] LU Y Z, WANG Q D, ZENG X Q, DING W J, ZHU Y P. Effects of silicon on microstructure, fluidity, mechanical properties, and fracture behaviour of Mg-6Al......
of elongation to fracture, is at the expense of strength by ECAP [14]. The reason is not clear . In the present work, AZ31 Mg alloy was subjected to repetitive ECAP processing in order to improve......