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for Al); Gm is the shear modulus of the matrix (2.6×1010 Pa for Al). The elongation of the composites changes with the test temperature. The average CTE of SiCp/6061Al composites and the theoretical data... in order to avoid oxidation of the sample from 25 to 200 °C at a heating rate of 2 °C/min. Three-points bending test was performed on a Shimadzu universal instrument with a testing span of 15 mm and a beam......
. To investigate wear loss, samples were weighed before and after the test using a weighing machine (Model RA310, Roy Electronics, Varanasi, India). The effect of load on reciprocating wear behavior was also investigated. The load was varied ranging 50, 60, 70, 80 and 90 N. Each test was performed for 13500 cycles with a frequency of 5 Hz. The stroke length of the reciprocating arm was kept constant......
parameters of the alloys were obtained by measuring the microstructure, strength and electrical conductivity of the samples. 2.2 Microstructure observation and property test Tensile samples with different compositions and heat treatments were prepared according to GB/T 228-2010 standard. MTS material test machine was used to perform the tensile tests at room temperature under a strain rate of 0.05......
protection mechanism of city rock slope and its laboratory test JIANG De-song, JIANG Chong, ZHAO Ming-hua (Institute of Geotechnical Engineering, Hunan University, Changsha 410082, China) Abstract... to soil 蔡强国[5]对4种压应力作用下有根土和无根土样进行三轴剪切试验,结果如图3所示.由图3可见,有根土的抗剪强度大于无根土的抗剪强度. (a) 砂性土;(b) 黏性土 图3 有根和无根砂性土与黏性土抗剪强度比较 Fig.3 Comparison of soil shear strength between sandy soil with roots......
2960 DTA-TGA, made by TA instrument under nitrogen atmosphere. Impact strength and flexural strength test were performed on Charpy Impact Tester (XCJ-400) and ZMGi 250 machine, respectively. At least ten samples were used for impact measurement and five for flexural measurement. The average value of each test group is employed for subsequent analysis. 3 RESULTS AND DISCUSSION 3.1 XRD......
University developed a slurry making technique of low superheat pouring with a shear field (LSPSF). The alloy liquid with some superheat degree was poured in delivery pipe. Then, it was changed... Casting; 11 moving die Fig.15 Schemalic illustration of combination process of diecasting and forging: 1 Upper clamping plate; 2 Punch-retainer plate; 3 Lower die; 4 Upper die; 5 Cavity-retainer......
with a metallographic microscope. The samples undergoing RUB were annealed at 533 K for 60 min. The mechanical properties were tested on a CMT5105 universal test machine and the formability was measured by the Erichsen test. X-ray texture analysis was performed for acquiring texture data using an X-ray diffractometer (Philips APD-10) with Cu Kα radiation, a voltage of 40 V and a current of 100 mA. Four pole figures......
, as well as isotropy, low melting point and shear strength, and good thermal stability, Cu nanoparticles as lubricant additives have been found to possess excellent tribological performance, self... Cu nanoparticles as an additive in liquid paraffin were evaluated using a four-ball machine under conditions of a rotating speed of 1450 r/min, test duration of 30 min, and normal load of 300 N......
. As a result, a refined microstructure is generated due to twinning, and a split-basal texture and shear band are gotten due to <a> combining with <c+a> slip in heavy deformation [1]. Similarly, {} twinning is found as a key factor for effectively reducing the deformed grain size in hot compression test, and all slip systems apart from the basal slip systems are active at a low level strain......
KARAASLAN1 1. Department of Metallurgical and Material Engineering, Yildiz Technical University, TR34210, Istanbul, Turkey; 2. Aluminium Test, Training and Research Center (ALUTEAM), Fatih Sultan Mehmet Vakif...° slope castings, finer grains are the result of increased shear force due to the high metal flow velocity. In cooling slope castings, grains nucleate and drift on the slope surface. For high process......