【摘 要】
：
Taking a Cu55Ni45 alloy as experimental alloy systems, we systematically studied the method of obtaining deep undercooling of alloy melt. Stable deep undercooling of alloy melt was obtained by the combination of molten glass purification and cyclic overhe
【机 构】
：
Faculty of Engineering, University Malaysia Sabah, Kota Kinabalu 88400, Malaysia;College of Mechanic
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
Taking a Cu55Ni45 alloy as experimental alloy systems, we systematically studied the method of obtaining deep undercooling of alloy melt. Stable deep undercooling of alloy melt was obtained by the combination of molten glass purification and cyclic overheating. Combined with the nucleation and growth mechanism of undercooled melt, the microstructure evolution and grain refinement mechanism of the alloy were systematically studied in a wide undercooling range. The grain refinement solidification structure under large undercooling was analyzed by EBSD technology. Combined with the typical characteristics of recrystallization in metallographic pictures, it was finally confirmed that the grain refinement was caused by recrystallization.
其他文献
Aluminum sol, dry gel, and film were prepared by sol-gel and a dipping-withdrawing method. The effect of polyethylene glycol (PEG) on the behavior of aluminum sol, gel, and film was investigated by DLS, rotary viscometer, XRD, IR, EPMA, and light microsco
A quantitative pH measuring method has been used to measure the pH of pure and blended cement mortars. The blended cement mortars incorporating supplementary cementitious materials (SCMs) such as fly ash (FA), ground granulated ballast furnace slag (GGBFS
With the risk of disappearing for the rock paintings considering long-term exposure in Helan Mountain, the freeze-thaw(F-T) cycling experiments were carried out with 12-hour F-T cycling (0, 10, 20, 30, and 40 F-T cycles) under five kinds of confining pres
TiSi2 reinforced boron phenolic composites (TP) and Vitreous silica fabric reinforced TiSi2/boron phenolic composites (VTP) were prepared by compression molding, and their thermal, mechanical, ablation properties were studied. TG results show that thermal
In order to facilitate self-compacting concrete to be better used in tunnel linings that can resist fires, a SiO2 aerogel-cement mortar coating was prepared. Based on the HC curve, a self compacting concrete cube specimens coated and uncoated with SiO2 ae
To reveal and utilize the interaction between Tamm plasmon polaritons (TPPs) and two-dimensional materials are promising for exploiting next-generation optoelectronic devices. Herein, the coupling mechanism between metal TPPs and monolayer WS2 along with
Hydration-heat-inhibiting materials(HIM) with polysaccharide as core material was prepared using microcapsule sustained-releasing technology, through a centrifugal spray granulation process after melting together. The preparation process parameters of HIM
A molecular modified PCE-type GA was self-synthesized, and the grindability concerning grinding duration and particle size distribution of ground cement was evaluated. Setting time, flowability, hydration heat, mechanical properties and microstructure of
Bituminous binders have been modified by using cocamide diethanolamide. The chemical material used in this study is used for the first-time on the purpose of modification of the bitumen. In addition to the conventional bitumen tests (penetration, softenin
To investigate the variation in the degree of polymerization calcium aluminium silicate hydrate (C-A-S-H) gel and its role in the evolution of the strength of waterglass slag binders, the compressive strength, hydration products, degree of hydration of th