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). The distribution of trace elements such as Fe, Si, Cu and Mg in the surface layer was measured by secondary ion mass spectrometer. The results show that the annealing has obvious effects on the pitting uniformity and the morphology of aluminum foil, due to the influence of the annealing on the distribution of trace elements in the surface layer of aluminum foil. Due to the lack of Cu......
Effect of trace rare earth element Er on Al-Zn-Mg alloy XU Guo-fu(徐国富)1, MOU Shen-zhou(牟申周)1, YANG Jun-jun(杨军军)2, JIN Tou-nan(金头男)3, NIE Zuo-ren(聂祚仁)3, YIN Zhi-min(尹志民)1 1. School of Materials... alloys were prepared by cast metallurgy. The effects of trace Er on the mechanical properties, recrystallization behavior and age-hardening characteristic of Al-Zn-Mg alloy were studied. The effect of Er......
. Key words: 7A55 aluminium alloy; trace elements; grain refinement; nucleation 超高强Al-Zn-Mg-Cu合金因合金化程度高, 易产生枝晶偏析, 晶界共晶组织粗大, 导致熔铸成型困难, 热轧开坯易开裂. 添加微量元素细化合金的铸锭组织, 能够显著提高合金的强度, 断裂韧性, 改善合金的加... (TixZr1-x)使α-Al形核. 随着Cr , Mn含量增加, 铸锭晶粒向枝晶化, 粗大化方向发展. 关键词: 7A55铝合金; 微量元素; 晶粒细化; 形核 中图分类号: TG111.7 文献标识码: A Refinement mechanism of trace Cr, Mn, Ti and Zr as cast 7A55 alloys HE Yong-dong, ZHANG......
system in mesozoic, magma emplacement and mineral extraction, ultra-shallow emplacement and blasting and hydrothermal mineralization. Key words: Angou; explosion breccia; trace elements; geological...矿区及区域岩石微量元素含量 Table 2 Trace element contents of rock in Angou and regional area 表3 矿质元素Pearson(皮尔逊)相关系数 Table 3 Pearson correlation coefficients of mineral elements 3.4 矿床分带与......
Geochemistry of Rare Earth Elements of Anqing Copper Deposit in Anhui Province 岳书仓1,周涛发1,刘晓东1,袁峰1 (1.Department of Resources and Environmental Science, Hefei University of Technology, Hefei 230009, China) Abstract:The geochemical features of REE were studied by comparing the copper ore with the skarn, the diorite and the stratum, to trace the source of metallogenic materials in Anqing copper......
; 文献标志码:A Major and trace elements’ characteristics of colloidal pyrites in Xinqiao Cu-S-Fe deposit, Tongling, Anhui Province, China ZHANG Yu1, 2, SHAO Yong-jun1.... School of Geosciences and Info-Physics, Central South University, Changsha 410083, China) Abstract: The contents of major and trace elements of colloidal pyrite in Xinqiao, Tongling, Anhui Province......
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="ChDivSummary" name="ChDivSummary"><正> Trace elements including REE (Rare Earth Elements) in fluid inclusions in Iherzolite, olivine, orthopyroxene, and clinopyroxene have been determined by heating...Rare earth elements in CO2-fluid inclusions in mantle IherzoliteJiuhua Xu, Yuling Xie, Lijun Wang , Heping Zhu, and Liquan Wang Department of Resource Engineering, University of Science......
) Abstract: The effect of trace elements on the microstructure and testing properties of Al-Zn-Mg-Cu alloys were studied by optical microscopy and transmitting electron microscopy. The results show... Eng A, 2002, A285: 62-68. [5]Schaffer G B, Huo S H. The effect of trace elements on the sintering of an Al-Zn-Mg-Cu-Zr alloy[J]. Acta Mater, 2001, 49: 2671-2678. [6]Engdah I T, Hansen V, Warren, et......