APPLICATION OF MODIFYING ALLOYING ALLOY CONTAINING NANOSIZED POWDERS OF ACTIVE ELEMENTS IN PRODUCTION OF HIGH-STRENGTH CAST IRON WITH GLOBULAR GRAPHITE by A. S. Kalinichenko, A. G. Slutsky, V. A. Sheinert

Subjects: “…high-strength cast iron…”
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Behaviour and design of extruded high-strength aluminium alloy SHS beam-columns by Beibei Li, Pengcheng He, Jingfeng Wang, Yuanqing Wang

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Research on the bearing performance of HSCA high-strength preloaded expansion piles in calcareous sand foundation by Tao Sun, Fang Wang, Jie Liu, Zhenxun Chen, Mingmin Tuo, Yunan Yang

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Effect of ultrasonic amplitude on microstructure and properties of wire arc additive manufactured ultra-high strength steel deposited metal by Tianli Zhang, Weifeng Li, Wen Wu, Lianyong Xu, Donghai Hu, Geng Chen, Wei Li, Erika Hodúlová

Subjects: “…Ultra-high strength steel…”
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Performance of high-strength and heat-resistant cast aluminum alloy and its complex shell castings for aircraft engines by QIE Juhong, XIE Feng, FENG Chao, WANG Pinghai, YU Tengfei, YANG Chaoyang, XI Honglei, XIAO Wenlong, MA Chaoli

Subjects: “…high-strength and heat-resistant aluminium alloy…”
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Application of cast parts in mechanical engineering by M. A. Sadokha, A. A. Andrushevich

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Effect of forging sequence and heat treatment on microstructure of high-duty power-plant shaft made of Cr-Mo ultra-high strength steel by Skubisz P., Lisiecki Ł.

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COMPARATIVE RESEARCHES OF FRACTURES OF HIGH-STRENGTH CAST IRON IN THE AS-CAST AND DEFORMED STATE by A. I. Pokrovsky, I. N. Khrol

Subjects: “…the results of comparative studies of fracture surfaces of high-strength cast iron in the as-cast state and after hot direct extrusion through an aperture of a conical die are presented. the shape change of graphite inclusions and components of the metal matrix is examined with increasing the reduction ratio from 0 (as-cast state) to 80%. for the fist time, using the electrochemical etching of the metal matrix of the cast iron, it is demonstrated experimentally that at plastic deformation the ductile flow of graphite inclusions occurs without fracturing of the latter. the surface morphology of a deformed graphite inclusion is revealed. it is shown that inside the inclusion the strain is distributed non-uniformly: the peripheral zones are deformed to a larger extent while the central part may retain its original radial structure. the fact that the most part of graphite inclusions on the fracture surface of the deformed cast iron appeared undamaged (very small amount of fractured inclusions was observed) testifies against the common opinion that graphite acts as a crack nucleation site. a hypothesis is put forward that the crack nucleates in the metal matrix, presumably at the pearlite/ferrite interface, and propagates from one graphite inclusion to another rounding but not damaging the latter.…”
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