搜索结果: 1-14 共查到“工学 Al-Si-Cu”相关记录14条 . 查询时间(0.176 秒)
Metal Corrosion of Al-Si-Cu Pattern Wafer Due to Chloride Ion Contaminants
Airborne molecular contaminants (AMCs) Chloride contamination Cleanroom micro-contamination HCl Pattern wafer Semiconductor device
2016/3/28
Chloride ions (Cl–) induce metal corrosion of integrated circuits and cause wafer scrap events in the clean room
environment. In this study, Al-Si-Cu pattern wafers were designed to monitor critical ...
Microstructures of Mg-Al-Zn and Al-Si-Cu cast alloys
Microstructures Mg-Al-Zn Al-Si-Cu cast alloys
2010/8/11
Recent years’ dynamic development, being present in the automobile industry, is mostly based on innovative constructional solutions as well modern materials, which directly influence mass, performance...
Structure investigation of the Al-Si-Cu alloy using derivative thermo analysis
Aluminium alloys Mechanical properties Thermo analysis
2009/12/14
Purpose: This research work presents the investigation results of derivative thermoanalysis performed using the UMSA device (Universal Metallurgical Simulator and Analyzer). The material used for inve...
Use of SEM and EDS analysis in the investigation of Al-Si-Cu piston alloy cast porosity
casting porosity piston
2009/10/23
Porosity formation was detected in the casting thinnest section in the proximity of the as cast surface and near the wall centerline. In order to investigate the cause of the porosity formation light ...
Derivative thermo analysis of the near eutectic Al-Si-Cu alloy
Aluminium alloy derivative thermo-analysis UMSA
2011/3/17
For determining of the dependence between cooling Speer, chemical composition and structure of the Al–Si–Cu aluminium cast alloy the thermo-analysis was carried out, using the UMSA device (Universal M...
Cd对铸造Al--Si--Cu--Mg合金时效过程的影响
铸造Al--Si--Cu--Mg合金 Cd 时效强化
2008/3/13
合金元素Cd的添加促进了铸造Al--Si--Cu--Mg合金的时效过程, 提高了合金的峰时效硬度,加快了合金的硬化速度. 当加入0.27%Cd时, 合金的强度提高了20%; 但加入量继续增大,强度反而降低. SEM, DSC和TEM分析显示, Cd加快了亚稳相的析出, 较早地形成了细小而密集的亚稳相; 同时, 较大的富Cd相、少量稳定相和过剩硅相质点的均匀析出, 对合金起到了第二相强化的作用. 在...
Computer aided method for quality control of automotive Al-Si-Cu cast components
Methodology of research Technological process Al-Si-Cu
2010/2/9
Purpose: The technological progress in material engineering causes the continuous need to develop product testing methods providing comprehensive quality evaluation. In material engineering it is the ...
Microstructure analysis of the automotive Al-Si-Cu castings
Automotive casting Structure of materials Al-Si-Cu
2011/3/15
The developed design methodologies both the material and technological ones will make it possible to improve shortly the quality of materials from the light alloys in the technological process, and th...
Analysis of influence of chemical composition of Al-Si-Cu casting alloy on formation of casting defects
Al-Si-Cu alloy Neural networks Casting defects Casting quality
2010/2/22
Purpose: A methodology of the computer-aided determining relationship between chemical composition of aluminum alloy and castings quality was presented in the paper.
Design/methodology/approach: To r...
The influence of chemical composition on the properties and structure Al-Si-Cu(Mg) alloys
Aluminum Cast Alloys Mechanical properties Structure
2011/3/11
The mechanical properties of different chemical composition AlSiCuMg type cast alloys after precipitation hardening are presented. The aim of the study was to find out how much the changes in chemistr...
The effect of copper concentration on the microstructure of Al-Si-Cu alloys
Al-Si-Cu alloys Effect of Cu concentration Differential thermal analysis
2011/3/11
In the metal casting industry, an improvement of component quality depends mainly on better control over the production parameters. In order to gain a better understanding of how to control the as-cas...
Quality analysis of the Al-Si-Cu alloy castings
Casting defect Technological process Computer image analysis
2011/3/11
materials from the light alloys in the technological process, and the automatic process flow correction will make the production cost reduction possible, and - first of all - to reduce the amount of t...
固溶处理对铸造Al-Si-Cu-Mg合金组织与性能的影响
铸造Al-Si-Cu-Mg合金 热处理 析出相 溶解 固溶强化
2010/3/11
对固溶处理过程中铸造Al-Si-Cu-Mg合金析出相溶解过程进行了研究。结果表明：在固溶处理初期，组织中θ相的数量逐渐减少，但在(FeMn)3SiAl12相中还有一定的Cu含量；而固溶后期，富铁相中的Cu含量也明显降低，且难溶的Al3Ti针状相也发生钝化，但部分Q相尚存在；随着固溶时间的延长，合金基体中Cu和Mg的含量逐渐增多，且富Mn和富Ti相也在合金基体中略有溶解；合金的固溶强化作用主要来源于...