共搜索到10509条信息，每页显示10条信息，共1051页。用时：0小时0分0秒567毫秒
基于Section的地球化学剖面光谱样品折线图绘制彭桥梁,贺文华,刘瑞,郑时干湖南省地质矿产勘查开发局四一八队摘 要:基于Section软件,分析了绘制地球化学剖面光谱样品折线图的方法.该方法解决了由于光谱样品数量多,采用间距不均匀且同一样品分析的元素种类繁多而导致绘制地球化学折线图流程繁琐的问题,将传统作图思路转变为计算机自动处理,并与当前推广的数字地质调查系统相衔接,具有快速简便易行,精度较高的特点,实用性较强.关键词:Section软件;地球化学剖面;折线图;光谱样品;......
is extruded through a die that consists of two channels with equal cross-section, intersecting at an angle φ[13-18]. Studies on commercial and engineered application of ECAE are rarely reported... ranging from 1 pass to 4 passes at 573 K by an equal channel die that consists of two channels with equal cross-section, intersecting at an angle of 90?. During ECAE, the billet was rotated by 90......
基于Section软件的矿山地质测绘图纠错方法研究陈亚玲甘肃省地质矿产勘查开发局第四地质矿产勘查院摘 要:矿山的勘探开采施工中,对矿山进行地质测绘工作十分有必要,并且一个准确的测绘结果,对于了解知晓矿山情况很有必要性,因此需要使用Section软件,对矿山地质测绘图纠错方法进行研究.首先,基于Section软件的矿山地质测绘图纠错设计,通过整合绘图勘测数据,将Section导入软件程序纠错.通过实验,使用Section软件程序纠错流程,针对四个等级的单点精度,分别用传统方法和Section软件纠错程序测试.得到结论:相比传统方法,使用section软件测绘的单点定位数据走势较为平缓,且精度普遍偏高.关键词:Section软件;矿山;地质测绘;方法研究;......
. Microstructure and mechanical properties of SPD-processed an as-cast AZ91D+Y magnesium alloy by equal channel angular extrusion and multi-axial forging [J]. Materials and Design, 2009, 30: 4557–4561. [29... deformed by ECAE [J]. Transactions of Nonferrous Metals Society of China, 2010, 20: 178–182. [36] ZHAO Z D, CHEN Q, CHAO H Y, HU C K, HUANG S H. Influence of equal channel angular extrusion processing......
considered in the plane of the cross section of the profile. In the first place, consider plastic bending of a massive rectangular cross section with depth (H) and width (B), assuming a state of one dimensional stress and that the material obeys LUDWIK’s simple constitutive law[4]. Equilibrium in the plane of the cross section means that the following relationship holds (2) Fig.2 Steps......
the two "H" shape profiles with a small cantilever through two-hole porthole die with two different designs. 2 Die design Fig.1(a) shows the cross-section shape and dimensions of the aluminum profile... of the container was 160 mm. Fig.1 Cross-section shape of extrudate (a), 3D solid model (b) and symmetrical layout of die orifices (c) Fig.2 Porthole die with and without pocket: (a) Upper die; (b) Lower die......
......
, applied strain) strongly depends on these positions [58] with the center of the billet exhibiting the most homogeneous microstructure. Fig. 2 Cross section of CP-Ti 3 Experimental Experimental... the amount of strain by increasing the number of passes while the original cross section remains unchanged [55]. Increasing the number of passes can lead to strong grain size refinement [74]. After the first......
of textures was performed on the section perpendicular to the extrusion direction. Specimens for tensile tests were machined from the as-cast and as-extruded alloys. The specimens have a gauge length of 15mm...) are the micrographs on the section parallel to the extrusion direction, while Figs.4(b) and (d) are the micrographs on the section perpendi- cular to the extrusion direction. It is obvious that the I-phases......
Trans. Nonferrous Met. Soc. China 28(2018) 2199-2213 Microstructure characterization and effect of extrusion temperature on biodegradation behavior of Mg-5Zn-1Y-xCa alloy F. DOOST MOHAMMADI, H... explored. The extrusion process was conducted at three different temperatures of 300, 330, and 370 °C. Chemical composition, phase constitution, microstructure, and biodegradation behavior of the alloys......
