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AA6111合金在热轧过程中保持时间对晶体织构的影响 宋颖刚1 (1.北京航空材料研究院,北京,100095) 摘要:使用EBSD研究了AA6111合金在两次热轧过程中不同保持时间对晶体织构演变的影响.结果显示:变形织构主要由α和β纤维组成.从主要织构组分的取向强度看出,随着保持时间的增加,Brass和Copper理想织构组分显著增加,S织构没有明显变化. 关键词:铝合金; 变形; 晶体织构; 背散射衍射(EBSD); aluminum alloy; deformation; crystallographic texture; electron backscattering diffraction (EBSD); [全文内容正在添加中] ......
能随着异速比增加而提高,但伸长率和断裂韧性降低；当异速比相同时,随着偏移量增加,蛇形轧制板材强度降低,伸长率和断裂韧性明显升高.在偏移量10mm且异速比为1.1的条件下,蛇形轧制试样裂纹单位形核能提升高14%~36%.这是由于蛇形轧制能够增强Al-Cu-Mg合金板材Cube织构并减弱Brass织构,形成具有更高裂纹扩展阻力的织构组态所致. 关键词:Al-Cu-Mg合金；蛇形轧制；力学性能；织构；裂...流变速率和等效应变更大.FU等[16-17]结合有限元模拟和轧制实验,总结蛇形轧制错位量,异速比,压下量和初始板厚对板材弯曲情况的影响规律,并设计合理的轧制条件匹配最大程度减小板材弯曲.LI等[18]研究1060铝板蛇形轧制后的弯曲和织构,发现蛇形轧制具有比常规轧制弱的Brass织构和略为高的立方织构,并且拉伸强度区别不大.WRONSKI等[19]研究了异速比在1~1.5范围内的非对称轧制对铝合金......
by the decomposition of cementite particles in cast brasses. The graphite particles are uniformly dispersed in the brass matrix with the average size of 5.0 μm and the volume fraction of ~1.1%. The machinability in the graphite brass is dramatically increased relative to the common brass, because of the lubricating properties of graphite particles and its role in chip breaking. The workpiece surface......
. The crystallographic texture of the extruded sample changed from weak cube texture {001}<100> to texture {018}<081> during tension fracture. However, strong Brass {110}<112> in the hot-rolled sample was modi-fied into a mixture texture component of Brass {110}<112> and S {123}<634> during tension fracture. Texture evolution in the two samples during tension can be explained......
不同冷轧压下量对亚稳态奥氏体不锈钢00Cr17Ni7织构的影响顾佳卿,黄俊霞,叶晓宁宝钢股份研究院不锈钢技术中心摘 要:采用X射线衍射技术(XRD)研究了不同冷轧压下量对亚稳态奥氏体不锈钢00Cr17Ni7织构的影响,分析了亚稳态奥氏体不锈钢00Cr17Ni7中马氏体相和奥氏体相的织构变化情况.研究结果表明,不同冷轧压下量下,00Cr17Ni7中的奥氏体相织构主要由Brass{110}<112>,Goss{110}<001>和少量的Copper{112}<111>,S{123}<634>组成,并且随着压下量的增加Brass和Goss织构强度显著提高;同时马氏体相织构主要以{115}<110>,{112}<110>,{111}<......
Inhomogeneous Deformation of Multilayered Roll-Bonded Brass/Cu CompositesNan Jia1,Ming-Wei Zhu2,Yi-Ran Zheng1,Tong He3,Xiang Zhao11. Key Laboratory for Anisotropy and Texture of Materials (ATM..." name="ChDivSummary">The deformation gradients in multilayered hot roll-bonded composite materials incorporating two dissimilar face-centered cubic metals, i.e., brass and Cu, were investigated......
, Copper, and Brass) after rolling and plain strain compression was simulated, and the predictions have been validated by the experimental observations. In the rotated-Cube and Goss, the redundant shear strain and crystal rotation were in the same pattern, alternating along the thickness, while the relation between them was not obvious for the Copper and Brass due to their asymmetrical distributions......
退火时间对冷轧亚稳态301L奥氏体不锈钢织构的影响顾佳卿,黄俊霞,陈旭,赵伟锋,叶晓宁宝钢股份研究院不锈钢技术中心摘 要:利用电子背散射衍射(EBSD)和X射线衍射(XRD)技术,研究在800℃退火时,不同退火时间对亚稳态奥氏体不锈钢301L织构的影响.结果表明,冷轧退火后,亚稳态奥氏体不锈钢301L织构强度明显减弱,奥氏体相织构主要由Brass{110}<112>,Goss{110}<001>和Copper{112}<111>,{225}<554>组成,并且随着退火时间的增加,Brass织构强度明显降低;同时对再结晶织构的形成机制的讨论认为,亚稳态奥氏体不锈钢301L的再结晶被"定向形核"过程所控制.关键词:奥氏体不锈钢;亚稳态;EBSD......
-ray diffraction(XRD) at room temperature. After quasi-static tensile, the texture evolution of different strain was observed. It was shown that the Goss and Brass components increased within... to the strain energy of this high manganese steel. At high strain levels, the high strain energy may contribute to the Brass components transition to the A(rot-Brass) components.关键词:......
as shown by resistivity and micro-hardness measurements. The deformation texture determined through X-ray diffraction is qualitatively the Brass type. The measured Lankford anisotropy parameter R... al [7-8] have determined the microtexture of Pb-Ca-Sn-Al alloy via EBSD analysis as being composed of strong multiple components including {011}á211?(Brass), {123}á634?(S) and {112}á111? (Copper......
