Study on Microstructure and Properties of Cu-14Fe-0.05C Alloy Prepared by Drawing

2020 ◽  
Vol 996 ◽  
pp. 137-141
Author(s):  
Wei Guo ◽  
De Ping Lu ◽  
Jiang Jiang ◽  
Ke Ming Liu
Keyword(s):  
Melting Process ◽  
Copper Matrix ◽  
Cast State ◽  
Vacuum Melting ◽  
Microstructure And Properties ◽  
Drawing Direction

Cu-14Fe-0.05C alloy was prepared by using the vacuum melting process and then multipass drawing deformation was performed. The results showed that with rise of drawing strain, iron-rich phases in the Cu-14Fe-0.05C alloy gradually change from irregularly distributed coarse dendritic phases in the as-cast state to slender fibrous ones distributed parallel along the drawing direction. The higher the strain is, the slender and denser the fibers are and the more uniform the distribution is. Moreover, more interfaces are found between copper matrix and iron-rich phases and the hardness and resistivity of the alloy become higher.

Effect of Annealing on the Microstructure and Properties of Drawn Cu-14Fe-0.05C Alloy

2020 ◽  
Vol 996 ◽  
pp. 125-130
Author(s):  
Wei Guo ◽  
De Ping Lu ◽  
Jiang Jiang ◽  
Ke Ming Liu
Keyword(s):  
Electrical Conductivity ◽  
Tensile Strength ◽  
Annealing Time ◽  
Annealing Temperature ◽  
Mechanical Performance ◽  
Melting Process ◽  
Vacuum Melting ◽  
Microstructure And Properties

Cu-14Fe-0.05C alloy was prepared by using the vacuum melting process and then multipass drawing deformation was performed. After that, the alloy in the as-drawn state was annealed. Based on this, the influence of annealing temperature on microstructure, mechanical performance and electrical conductivity of the alloy was studied. The results showed that the speed of recovery and recrystallization of the as-drawn Cu-14Fe-0.05C alloy accelerates and iron-rich fibers gradually become slender, bend and fracture, with the increase of annealing temperature. The tensile strength of the alloy constantly decreases, while elongation continuously rises and resistivity gradually reduces. With the extension of annealing time, tensile strength and resistivity of the Cu-14Fe-0.05C alloy gradually decreases, while elongation gradually increases.

Influence of La and Ce on Microstructure and Properties of Cu-Cr-Zr Alloy

2011 ◽  
Vol 295-297 ◽  
pp. 1168-1174 ◽  
Author(s):  
Jiao Yan Dai ◽  
Si Guo Mu ◽  
Yong Ru Wang ◽  
Xiao Pan Yang ◽  
Jie Li
Keyword(s):  
Free Energy ◽  
Gibbs Free Energy ◽  
Melting Process ◽  
Vacuum Melting ◽  
Microstructure And Properties ◽  
Pine Tree ◽  
Fine Grain ◽  
Zr Alloy

The degassing and dedusting mechanism of La and Ce during non-vacuum melting process of Cu-Cr-Zr alloy were analyzed by thermodynamics. The gibbs free energy changes of reactions of La and Ce with some impurties such as O2, H2, S, P and Si, were calculated to discriminate the possibility of reaction during the melting process, respectively. In addition, the effect of La and Ce on microstructure and properties were studied. The results show that La and Ce can react with O2, H2, S, P and Si, which improves the effect of degassing and dedusting remarkably; the addition of La and Ce can eliminate pine-tree crystal, fine grain and clear grain bourdary.

Variation of Microstructure and Mechanical Properties of ZW61 Magnesium Alloy Solidified under Different Pressures

2022 ◽  
Vol 327 ◽  
pp. 3-10
Author(s):  
Shu Sen Wu ◽  
Xiao Gang Fang ◽  
Shu Lin Lü ◽  
Long Fei Liu ◽  
Wei Guo
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Volume Fraction ◽  
Applied Pressure ◽  
Second Phase ◽  
Cast State ◽  
Microstructure And Properties ◽  
Microstructure Refinement ◽  
Porosity Reduction ◽  
Average Grain Size

There is little datum related to microstructure and properties of Mg alloys squeeze-casted with pressure over 200 MPa. In this study, the microstructure and properties of Mg-6Zn-1.4Y (ZW61) alloy solidified under 100MPa to 800MPa were investigated. The results show that a remarkable microstructure refinement and porosity reduction can be reached through solidification under high pressure. The average grain size and the volume fraction of second phase, i.e. quasicrystal I-phase, decrease continuously with the increase of applied pressure. The tensile properties, especially elongation, are obvious enhanced because of the microstructure refinement and castings densification under high pressure. The ultimate tensile strength and elongation of ZW61 alloy in as-cast state are 243 MPa and 18.7% when the applied pressure is 800 MPa, which are increased by 35% and 118% respectively, compared with that of the gravity castings.

Effects of graphene content on the microstructure and properties of copper matrix composites

Carbon ◽  
2016 ◽  
Vol 96 ◽  
pp. 836-842 ◽  
Author(s):  
Fanyan Chen ◽  
Jiamin Ying ◽  
Yifei Wang ◽  
Shiyu Du ◽  
Zhaoping Liu ◽  
...  
Keyword(s):  
Copper Matrix ◽  
Matrix Composites ◽  
Copper Matrix Composites ◽  
Microstructure And Properties ◽  
Graphene Content

scholarly journals Effect of V Addition on Microstructure and Properties of Cu-1.6Ni-1.2Co-0.65Si Alloys

Metals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 679
Author(s):  
Jinfeng Zou ◽  
Jianyi Cheng ◽  
Guangbo Feng ◽  
Jian Xie ◽  
Fangxin Yu
Keyword(s):  
Electrical Conductivity ◽  
High Strength ◽  
Copper Matrix ◽  
Optical Microscope ◽  
High Electrical Conductivity ◽  
Microstructure And Properties ◽  
Orowan Mechanism ◽  
Transmission Electron ◽  
Aging Response ◽  
Solute Atoms

To obtain high strength and high electrical conductivity at the same time, the microstructure and properties of 0.2 wt.% V-added, 0.1 wt.% V-added and V-free Cu-1.6Ni-1.2Co-0.65Si(-V) alloys were investigated. We examined with electrical conductivity and hardness measurements, tensile test, optical microscope and transmission electron microscope (TEM). The results show that Cu-1.6Ni-1.2Co-0.65Si-0.1V alloy obtains excellent combination properties: electrical conductivity is 46.12% IACS, hardness is 293.88 Hv, and tensile strength is 782 MPa, which are produced by 65% cold rolling + aging at 500 °C for 480 min. The addition of vanadium (V) can accelerate the precipitation of solute atoms from the copper matrix, improve the hardness and electrical conductivity of Cu-1.6Ni-1.2Co-0.65Si alloys, and greatly accelerated the aging response. δ-(Co,Ni)2Si and β-Ni3Si phases are detected in Cu-1.6Ni-1.2Co-0.65Si-0.1V alloy. The Orowan mechanism and grain boundary strengthening play a major role in the yield strength strengthening due to δ-(Co,Ni)2Si phase.

scholarly journals Microstructure and Properties of Multifibre Composites

2016 ◽  
Vol 61 (2) ◽  
pp. 911-916 ◽  
Author(s):  
W. Głuchowski ◽  
Z. Rdzawski ◽  
J. Domagała-Dubiel ◽  
J. Sobota
Keyword(s):  
Electrical Properties ◽  
Cross Section ◽  
Copper Matrix ◽  
Copper Base ◽  
Microstructure And Properties ◽  
Mechanical And Electrical Properties ◽  
The Cross

Abstract In the study microstructure and properties of composite multifibre copper-base wires are presented. A decision was made to produce wires with “soft” fibres (Al) and “hard” fibres (Fe). In the study the phenomenon occurring on the border of Al-Cu was also analysed. The produced Cu-Al and Cu-Fe composites presented ordered microstructure with the fibres uniformly distributed in the copper matrix. The composites underwent plastic consolidation to the degree which provided satisfactory mechanical and electrical properties. During the drawing the fibres deformed proportionally with copper matrix therefore their content in the cross section remained unchanged.

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