Influence of deposit track on the forming and performance of wire arc additive manufactured 2319 aluminum alloy components

2021 ◽  
Author(s):  
Honglei Zhao ◽  
Yiwen Li ◽  
Yajie Sun ◽  
Zhihai Dong ◽  
Huifang Liu ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
And Performance

Anisotropy in Compression Creep-Ageing Behavior of 2219-T3 Aluminum Alloy

2021 ◽  
Vol 315 ◽  
pp. 31-36
Author(s):  
Xue Ying Chen ◽  
Li Hua Zhan ◽  
Hai Long Liao ◽  
Yuan Gao
Keyword(s):  
Aluminum Alloy ◽  
Yield Strength ◽  
Applied Stress ◽  
Material Properties ◽  
Rolling Direction ◽  
Deformation Texture ◽  
Compression Creep ◽  
Stress States ◽  
And Performance ◽  
Distribution Of Stress

Creep age forming technology (CAF) has been widely used to manufacture large integral panels in aerospace industry. However, due to the bending of the sheet metal, the stress states usually changes along the thickness direction during the CAF process, resulting in a complex distribution of stress. In addition, deformation texture is introduced when the sheet has a large pre-deformation, which also greatly affects the shape and performance of the component after aging. In this paper, the anisotropy in compression creep-ageing behavior of 2219-T3 aluminum alloy was studied. It was found that there is obvious anisotropy of compressive creep strains, the creep strain is the largest when the applied stress is along the rolling direction (RD) and the smallest when the applied stress is along the transverse direction (TD). The results of room temperature (25 ° C) and high temperature (165 ° C) tensile property test shows that the as-received material properties has obvious in-planar anisotropy, and the yield strength in the RD is the largest, but the 45° and TD are basically the same. Interestingly, the anisotropy of yield strength after SFA and compressive stress creep aging has basically disappeared, that is,the material properties tended to be isotropic after ageing.

Hot Isostatic Processing

2004 ◽  
pp. 55-60
Keyword(s):  
Aluminum Alloy ◽  
Hot Isostatic Pressing ◽  
High Quality ◽  
Advantages And Disadvantages ◽  
Radiographic Inspection ◽  
Hot Isostatic Processing ◽  
Alloy Castings ◽  
And Performance ◽  
Hip Process ◽  
Very High

Abstract Hot isostatic pressing (HIP) is a process refinement available to address internal porosity in castings. The HIP process may be used, in particular, for applications requiring very high quality and performance. This chapter discusses the principles, advantages, and disadvantages of HIP. It describes the effect of HIP on tensile properties and on the fatigue performance of aluminum alloy castings. In addition, the chapter discusses the processes involved in radiographic inspection of HIP-processed castings.

The Influence of Composition on the Material Structure and Performance of 3104 Aluminum-Alloy Canbody Material

2012 ◽  
Vol 535-537 ◽  
pp. 987-991
Author(s):  
Rui Yin Huang ◽  
Zhi Min Yin ◽  
Qi Wu Huang ◽  
Ming Shun Liao
Keyword(s):  
Aluminum Alloy ◽  
Tensile Test ◽  
Cube Texture ◽  
Material Structure ◽  
Second Phase ◽  
Structure And Properties ◽  
Goss Texture ◽  
Phase Size ◽  
And Performance

Effect of content of Fe,Si and Fe/Si on Structure and Properties of 3014 can-body were studied by using tensile test, stamping test, SEM, XRD, etc. The results show that:(1) The sum of Cube and Goss texture in 3104 aluminum-alloy canbody is about 40%. The influence of brass texture{011}, S texture{123}, copper texture Cu{112}, cube texture{001} and Goss texture{011} is balanced, resulting in ears in 8 directions and low earing rate. Fe/Si of 1.8 possesses less content of Brass compared to Fe/Si of 3.2 ，and less earing rate; (2)The phase size of compound particles of Al(Fe,Mn,Si) in the second phase of 3104 aluminum-alloy canbody shouldn’t exceed 22μm, Lumpy compound particles will compromise the life of moulds.

Influence of Work-Hardening on Wear Resistance of Machined Surface of Aviation Aluminum Alloy

2013 ◽  
Vol 589-590 ◽  
pp. 117-121 ◽  
Author(s):  
Xiu Li Fu ◽  
Zeng Hui An ◽  
Yang Qiao ◽  
Xiu Hua Men
Keyword(s):  
Wear Resistance ◽  
Aluminum Alloy ◽  
Friction Coefficient ◽  
Work Hardening ◽  
High Speed ◽  
Cutting Speed ◽  
Cutting Conditions ◽  
Micro Hardness ◽  
Machined Surface ◽  
And Performance

Work-hardening of machined surface plays an important role in the evaluation of surface quality and performance of wear resistance in the process of machining components. In this study work-hardening of machined surface during milling 7050-T7451 aluminum alloy is investigated using micro-hardness experiments under different cutting conditions. Moreover, the wear resistance of machined surface including wear quantity and friction coefficient are obtained and studied by means of high speed ring-block friction-wear tester. The work-hardening and wear resistance are particularly sensitive to cutting speed. Friction coefficient has marked drop trends and the tendency of wear quantity is ascend in first and descend at last as work-hardening increases. The comparison of wear resistance under different cutting conditions shows that the wear resistance of machined surface can be directly affected by work-hardening and machined surface obtained by high speed milling with higher micro-hardness have more superior in wear resistance performance.

scholarly journals Review of Aluminum Alloy Development for Wire Arc Additive Manufacturing

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5370
Author(s):  
Geir Langelandsvik ◽  
Odd M. Akselsen ◽  
Trond Furu ◽  
Hans J. Roven
Keyword(s):  
Aluminum Alloy ◽  
Additive Manufacturing ◽  
Alloy Composition ◽  
Layer By Layer ◽  
Alloy Development ◽  
And Performance ◽  
Crack Susceptibility ◽  
Wire Arc Additive Manufacturing ◽  
Further Development ◽  
Complex Parts

Processing of aluminum alloys by wire arc additive manufacturing (WAAM) gained significant attention from industry and academia in the last decade. With the possibility to create large and relatively complex parts at low investment and operational expenses, WAAM is well-suited for implementation in a range of industries. The process nature involves fusion melting of a feedstock wire by an electric arc where metal droplets are strategically deposited in a layer-by-layer fashion to create the final shape. The inherent fusion and solidification characteristics in WAAM are governing several aspects of the final material, herein process-related defects such as porosity and cracking, microstructure, properties, and performance. Coupled to all mentioned aspects is the alloy composition, which at present is highly restricted for WAAM of aluminum but received considerable attention in later years. This review article describes common quality issues related to WAAM of aluminum, i.e., porosity, residual stresses, and cracking. Measures to combat these challenges are further outlined, with special attention to the alloy composition. The state-of-the-art of aluminum alloy selection and measures to further enhance the performance of aluminum WAAM materials are presented. Strategies for further development of new alloys are discussed, with attention on the importance of reducing crack susceptibility and grain refinement.

Effects of polyvinylidene fluoride sealing on micro-arc oxidation coating of 7075 aluminum alloy

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
J. Li ◽  
R.G. Song ◽  
X. Qi ◽  
C. Wang ◽  
B. Jiang
Keyword(s):  
Aluminum Alloy ◽  
Polyvinylidene Fluoride ◽  
Microarc Oxidation ◽  
Pvdf Film ◽  
7075 Aluminum Alloy ◽  
Alloy Matrix ◽  
Content Type ◽  
Micro Arc Oxidation ◽  
Oxidation Technology ◽  
And Performance

Purpose The purpose of this is to study the effects of organic sealing on the structure and performance of the micro-arc oxidation (MAO) film of 7075 aluminum alloy. Design/methodology/approach The 7075 aluminum alloy was treated by micro-arc oxidation technology, then the MAO films were sealed by polyvinylidene fluoride (PVDF) solutions with different concentrations to forms a MAO/PVDF composite coating on the surface of the 7075 aluminum alloy matrix. Findings The results show that the MAO/PVDF film thickness increased to 24.8 um. When the PVDF concentration was 8 g/L, and the sealed film reached best corrosion resistance and wear resistance. Originality/value The effects of different concentrations of PVDF on microarc oxidation properties of 7075 aluminum alloy were studied.

Study on Procedure of Bonding-FSSW Hybrid Joints of AZ31 Magnesium Alloy

2011 ◽  
Vol 314-316 ◽  
pp. 953-956 ◽  
Author(s):  
Cheng Gang Ding ◽  
Ya Qi Ni ◽  
Chuan Jun Guo ◽  
Gao Feng Quan ◽  
Ji Ping Ge
Keyword(s):  
Mechanical Property ◽  
Aluminum Alloy ◽  
High Strength ◽  
Bonding Agent ◽  
Nugget Zone ◽  
Hybrid Joint ◽  
Hybrid Joints ◽  
Coarse Grains ◽  
And Performance ◽  
Microstructure And Performance

In this paper a bonding-FSSW hybrid method is proposed and the joining procedure as well as the microstructure and performance of bonding-FSSW hybrid joints of AZ31 aluminum alloy is examined . The results show that the bonding agent has little influence on the forming and mechanical property of FSSW nugget, the shear-resisting property of the hybrid joints with sealing glue is equivalent to FSSW joints, in bonding-FSSW hybrid joint with high-strength bonding agent, the shear-resisting property of joints are apparently superior to that of pure FSSW or bonding joints. Tiny and uniform equiaxial grains are formed in the WN(Welding nugget zone) and coarse grains are formed in TMAZ (Thermomechanically affected zone) and HAZ (Heat affected zone), but with unequal size. The good properties of the hybrid joints are obtained by choosing the optimal joining parameter.

Study on Corrosion Wear Behavior of 70 Aluminum Alloy Anodic Oxide Coating

2013 ◽  
Vol 652-654 ◽  
pp. 1735-1738
Author(s):  
Bai Yang Lou ◽  
Guo Zhu ◽  
Pei Hua Li ◽  
Han Shan Dong
Keyword(s):  
Aluminum Alloy ◽  
Coefficient Of Friction ◽  
Electroless Plating ◽  
Wear Behavior ◽  
Salt Water ◽  
Oxide Coating ◽  
Anodic Oxide ◽  
Corrosion Wear ◽  
And Performance ◽  
Anodic Oxidation Treatment

In vitriolic electrolyte, DC power supply is used on 7075 aluminum alloy to have anodic oxidation treatment then let the oxidized samples have a treatment of electroless plating. Surface morphology of the coating and performance of corrosion wear are studied by means of scanning electron microscope (SEM) and friction and wear experimental machine. The results show that unsealed oxide coating have many holes and cracks, which are extremely badly-distributed; corrosion resistance of the oxide coatings which have the treatment of electroless plating have improved, having lower coefficient of friction and better performance of corrosion wear; besides; coefficient of friction of the samples in water is higher than that in salt water, its wear amount is less.

Synthesis and Performance of Nanocrystalline 5083 Aluminum Alloy Powders by Cryomilling

2009 ◽  
Vol 66 ◽  
pp. 187-190
Author(s):  
Xiu Hua Ma ◽  
Wei Min Wang ◽  
Hao Wang ◽  
Yu Cheng Wang ◽  
Zheng Yi Fu
Keyword(s):  
Aluminum Alloy ◽  
High Speed ◽  
Milling Time ◽  
Alloy Structure ◽  
Cryogenic Milling ◽  
Average Grain Size ◽  
Main Factors ◽  
And Performance ◽  
5083 Aluminum Alloy ◽  
Thermal Stability Of

In this text, 5083 aluminum alloy was prepared with the method of the liquid nitrogen cryogenic milling (cryomilling). The microstructure,microstructural evolution and thermal stability of sample powder was investigated by XRD,SEM and DSC. The experimental results show that the particles size of 5083 aluminum alloy power during cryomilling was gradually reduced; milling time and milling speed are the main factors of affected alloy structure and performance, and high speed cryomilling could result in more uniform nanometer grains. The microstructure of the cryomilling 5083 aluminum alloy for 5 hours is micron-sized agglomerates with an average grain size of 45 nm.

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