共搜索到1696条信息，每页显示10条信息，共170页。用时：0小时0分0秒848毫秒
Trans. Nonferrous Met. Soc. China 31(2021) 1031-1048 Tailoring microstructure and microhardness of Zn-1wt.%Mg-(0.5wt.%Mn, 0.5wt.%Ca) alloys by solidification cooling rate Talita A. VIDA1, Cassio A. P... Vickers microhardness and secondary dendritic spacings were proposed, showing that the microstructural refinement and characteristic Ca and Mn based IMCs induce an increase in hardness as compared......
; 文献标识码: A Effects of alloying elements on glass forming ability and microhardness of Cu60Zr30Ti10 alloy YANG Yuan-zheng, QIU Zai-hong, XIE Zhi-wei, BAI Xiao-jun (Faculty... be produced by copper mould sucking cast. The glass forming ability, thermal stability and microhardness were investigated using X-ray diffractometer, differential scanning calorimeter......
100124, China) Abstract: The variations of microhardness and microstructures for the biomedical Ti-35Nb-5Ta-7Zr and Ti-35Nb-7Zr alloys subjected to different heat treatments were studied by microhardness test, X-ray diffractometry and transmission electron microscopy. The effects of alloying element Ta on these variations and aging precipitation sequences were revealed. The results show......
test and microhardness measurement, etc. The results show that for the printed samples, fine grains are found on the boundary of the pools. And large dendritic cell grains with the size of about 7 μm... manufacturing; aluminum-scandium alloy; aging treatment; microstructure; tensile property; microhardness 铝及其相关合金因具备优秀的耐蚀性,高导热性等被广泛运用于工业,军事以及生活之中.随着零构件的推陈出新以及对性能要求的不断提高,钪元素被广泛应用于铝合金改性,生成的Al3Sc相能够促进非均质......
的一致性,从而验证了上述有限元模拟的可靠性. 图9 坯料在不同ECAEE-SC变形阶段下的显微硬度平均值 Fig. 9 Average microhardness values of billet at different ECAEE-SC deformation stages 4 结论 1) ECAEE-SC变形主要集中在球形转角和膨胀通道两个区域,坯料的挤..., the extrusion experiment is consistent with the finite element simulation results. The extruded billet is free of macro crack with intact shape, and the microhardness increases from 36.6 HV to 70.2 HV......
工艺参数对爆炸喷涂WC-Co涂层性能均匀性的影响王铁钢1,宋丙红2,华伟刚1,宫骏2,孙超2(1.辽宁省沈阳市科学院金属研究所金属腐蚀与防护国家重点实验室2.中航工业哈尔滨东安发动机(集团)有限公司,哈尔滨 150066)摘 要:采用正交实验,分别研究了氧燃率,喷涂距离对爆炸喷涂WC-Co涂层性能的影响.通过工艺优化,获得了结构均匀致密,硬度高,弹性模量大,耐磨性能好的WC-Co涂层.利用XRD和SEM分析涂层的物相组成,观察其微观结构,经截面与表面力学性能和磨损性能对比,优化后的涂层表现出近似各向同性特征.分......
Trans. Nonferrous Met. Soc. China 22(2012) 2158-2163 Effect of Sn substitution and heat treatment on microstructure and microhardness of Co38Ni34Al28-xSnx magnetic shape memory alloys SU Jia-jia1, 2... December 2011; accepted 23 May 2012 Abstract: Sn was used to replace Al in Co38Ni34Al28 alloy. The microstructure and microhardness of Co38Ni34Al28-xSnx (x=0, 1, 2, 3) magnetic shape memory alloys......
homogenized, solution heat treated, followed by aging for different time duration. The specimens were characterized for microstructure and tested for microhardness and wear rate. A hybrid model with a linear function and radial basis function was developed to analyze the influence of nickel, tin, and aging time on the microhardness and tribological behavior of copper-nickel-sin alloy system. The results......
on deposition rate, microhardness and microstructures, and the influence of heat treatment temperature on phase structures, microhardness and abrasivity of Ni-W-B-CeO2 composite coatings were... to the Ni-W-B-CeO2 composite coatings, possessing better microhardness and abrasion resistance when heat-treated at 400℃ for 1h. The microhardness as-deposited with 636Hz and the deposition rate......
nanocrystalline metals was characterized by XRD and FESEM. The microhardness and electrical resistivity were tested by the HMV-2 type Microhardness Tester and 6157 type Electrometer, respectively... are 95.1%, 98.1% and 98.3%, respectively. The microhardness of nanocrystalline Cu, Al and Ag are 2.01, 2.11 and 1.26 GPa respectively, which are larger than those of their coarse-grained counterparts......
