Effect of Additives in an Electrolyte on Mechanical Properties of Electrolytic Copper Foil

2013 ◽  
Author(s):  
Takuya Nagayama ◽  
Hiroaki Yoshida ◽  
Ikuo Shohji
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Copper Foil ◽  
Disodium Salt ◽  
The Other ◽  
Hydroxyethyl Cellulose ◽  
Fatigue Properties ◽  
Electrolytic Copper ◽  
Effect Of Additives ◽  
Sulfopropyl Disulfide

The effect of additives in electrolyte on mechanical properties of electrolytic copper foil was investigated. Bis-(3-sulfopropyl)-disulfide disodium salt (SPS), animal protein of low molecular (PBF) and hydroxyethyl cellulose (HEC) were added in electrolyte as additives. The additive amount of SPS was changed in this study. The addition of SPS is effective to improve tensile strength and hardness of electrolytic copper foil. With increasing the additive amount of SPS, the grain of electrolytic copper became finer and thus its hardness and elastic modulus increased. On the other hand, fatigue properties improved when the additive amount of SPS decreased and the grain size of electrolytic copper became relative large.

scholarly journals Grain Size Evolution and Mechanical Properties of Nb, V–Nb, and Ti–Nb Boron Type S1100QL Steels

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 492
Author(s):  
Jan Foder ◽  
Jaka Burja ◽  
Grega Klančnik
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Grain Size ◽  
Hot Forging ◽  
Size Control ◽  
High Strength ◽  
Fatigue Properties ◽  
Titanium Addition ◽  
Austenite Grain Size ◽  
Size Evolution

Titanium additions are often used for boron factor and primary austenite grain size control in boron high- and ultra-high-strength alloys. Due to the risk of formation of coarse TiN during solidification the addition of titanium is limited in respect to nitrogen. The risk of coarse nitrides working as non-metallic inclusions formed in the last solidification front can degrade fatigue properties and weldability of the final product. In the presented study three microalloying systems with minor additions were tested, two without any titanium addition, to evaluate grain size evolution and mechanical properties with pre-defined as-cast, hot forging, hot rolling, and off-line heat-treatment strategy to meet demands for S1100QL steel. Microstructure evolution from hot-forged to final martensitic microstructure was observed, continuous cooling transformation diagrams of non-deformed austenite were constructed for off-line heat treatment, and the mechanical properties of Nb and V–Nb were compared to Ti–Nb microalloying system with a limited titanium addition. Using the parameters in the laboratory environment all three micro-alloying systems can provide needed mechanical properties, especially the Ti–Nb system can be successfully replaced with V–Nb having the highest response in tensile properties and still obtaining satisfying toughness of 27 J at –40 °C using Charpy V-notch samples.

The Influence of the Ferrite and Pearlite Grain Size on the S-N Fatigue Characteristics of Steel

2014 ◽  
Vol 224 ◽  
pp. 3-8 ◽  
Author(s):  
Sebastian Kamiński ◽  
Marcel Szymaniec ◽  
Tadeusz Łagoda
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Volume Fraction ◽  
Fatigue Properties ◽  
Phase Volume ◽  
Bending Tests ◽  
Phase Volume Fraction ◽  
Similar Chemical ◽  
Fatigue Characteristics ◽  
Ferrite Grain Size

In this work an investigation of internal structure influence on mechanical and fatigue properties of ferritic-pearlitic steels is shown. Ferrite grain size and phase volume fraction of three grades of structural steel with similar chemical composition, but different mechanical properties, were examined. Afterwards, samples of the materials were subjected to cyclic bending tests. The results and conclusions are presented in this paper

Microstructure and Mechanical Properties of Al-0.5 at.% X (=Si, Ag, Mg) Alloys Highly Deformed by ARB Process

2008 ◽  
Vol 584-586 ◽  
pp. 547-552 ◽  
Author(s):  
Daisuke Terada ◽  
Toshiaki Masui ◽  
Naoya Kamikawa ◽  
Nobuhiro Tsuji
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Microstructure Evolution ◽  
High Purity ◽  
Uniform Elongation ◽  
Mg Alloys ◽  
The Other ◽  
Other Hand ◽  
The Difference ◽  
Lamellar Boundary

Effect of solid solution elements on microstructure evolution and mechanical properties was investigated using a high purity Al (purity 99.99%) and Al-0.5 at.% X ( X = Si, Ag, Mg ) alloys deformed by accumulative roll bonding (ARB) process up to 7 cycles (equivalent strain of 5.6) at ambient temperature. The ARB-processed high purity Al showed the equiaxed microstructure having mean grain size of 750 nm. On the other hand, the microstructure of the ARB-processed Al-0.5at.%X alloys showed lamellar boundary structures elongated along RD. The mean lamellar boundary spacing significantly differed depending on the alloying elements, which suggested that solute atoms had a significant effect on microstructure evolution. The difference in the grain size was regarded to be caused by the difference in recovery processes in the alloys. The tensile strength of the alloys increased with increasing the number of ARB cycles. In the Al-Si and Al-Ag alloys, the post-uniform elongation increased with increasing the number of the ARB cycles. On the other hand, the elongation of the Al-Mg hardly changed during the ARB process.

Mechanical Properties of Antarctic Sea Ice

1988 ◽  
Vol 110 (4) ◽  
pp. 403-408 ◽  
Author(s):  
N. Urabe ◽  
M. Inoue
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Grain Size ◽  
Compressive Strength ◽  
Ice Sheet ◽  
The Other ◽  
Square Root ◽  
Thickness Direction ◽  
Air Content ◽  
Brine Volume

Ice samples were extracted from a land-fast ice sheet of 90 cm thickness at Lutzow-Holm Bay in the Antarctica. The ice samples were then shipped to a cold room in Tokyo, and unconfined uniaxial compression tests and fracture toughness tests were performed for a wide range of loading rate under temperature varying from −5°C to −30°C. During the tests limited in number, acoustic emission measurements were also carried out. On the other hand, distributions of salinity, density, air content, fabric structure and grain size were examined along the thickness direction of the ice sheet. The ice sheet consisted of fine-grained granular ice at the top surface layer and columnar grains below it. The grain size was less than 1 mm for the granular ice and the columnar ice grain size increased linearly with the depth from about 1 mm just beneath the transition zone to about 13 mm at the bottom surface. The density and the air content also varied showing its maximum or minimum value, respectively, at the mid-thickness position along the thickness direction of the ice sheet. Thus, correlations between the mechanical properties and the physical features were studied. The fracture toughness (KIC) of the columnar grained ice showed a strong dependence on the grain size (diameter of the columnar ice). Namely, the KIC decreased in proportion to the inverse square root of the grain size. The compressive strength showed a linear relationship with the density, which was a function of not only the brine volume, but also the air content. Accordingly, the compressive strength was recognized to decrease with an increase in the sum of the square root of brine volume and the square root of air content. The other ice samples were also extracted from one of icebergs in Lutzow-Holm Bay. And the compressive strength and the fracture toughness were measured and reported in this paper.

Effects of RE on the Microstructure and Mechanical Properties of Electrodeposited Copper Foil

2010 ◽  
Vol 150-151 ◽  
pp. 68-71
Author(s):  
Tian He ◽  
Guang Bin Yi ◽  
Fen Min Cai ◽  
Wen Yi Peng ◽  
Xiang Jie Yang
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Copper Foil ◽  
High Current Density ◽  
Testing Machine ◽  
Homogeneous Distribution ◽  
Universal Testing ◽  
Maximum Value ◽  
Microcomputer Control ◽  
Method Effects

Electrodeposited copper foil was prepared by direct current electrodeposited method. Effects of different RE additions including 0, 3mg/L, 6mg/L and 9mg/L on the morphology, roughness, and mechanical properties of electrodeposited copper foil are investigated at high current density and high flow rate by SEM (scanning electron microscope), roughness measuring instrument, microcomputer control electronic universal testing machine and high temperature drawing machine. The results reveal that with increasing in RE content, the grain size in the copper foil is refined with more homogeneous distribution and denser, mechanical properties can be improved also. The desirable grain size in the copper foil with maximum value of the mechanical properties and the roughness can be obtained with approximately 6 mg/L RE content.

Metallurgical and Mechanical Properties of Friction Stir Welded Ultra Fine Grained Steel

2007 ◽  
Vol 539-543 ◽  
pp. 3727-3732 ◽  
Author(s):  
Satoshi Hirano ◽  
Kazutaka Okamoto ◽  
S.H.C. Park ◽  
K. Aota ◽  
T. Tsukamoto
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Friction Stir Welding ◽  
Cubic Boron Nitride ◽  
Joint Effect ◽  
The Other ◽  
Friction Stir ◽  
Polycrystalline Cubic Boron Nitride ◽  
Fine Grained ◽  
Average Grain Size

Friction Stir Welding (FSW) has been applied to ultra fine grained (UFG) steel which is the plane carbon steel with the average grain size of 1mm. The plates of 5mm thickness was successfully welded using pcBN tool (polycrystalline cubic boron nitride) and the metallurgical and mechanical properties of the joint were evaluated. In the stir zone, Bainite has been formed which shows the highest harness in the joint. On the other hand, grain growth is observed in the heat affected zone. The joint effect of 88% has been obtained for UFG steel by FSW process.

Preparation and Properties of ZrO2/Mo Alloys

2017 ◽  
Vol 36 (2) ◽  
pp. 163-166 ◽  
Author(s):  
Chaopeng Cui ◽  
Yimin Gao ◽  
Shizhong Wei ◽  
Guoshang Zhang ◽  
Xiangwei Zhu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Hydrothermal Synthesis ◽  
Traditional Method ◽  
The Other

AbstractThe nano-sized ZrO2 reinforced Mo alloys were prepared by hydrothermal synthesis and subsequent sintering. During preparation, the nano-sized ZrO2 particles were added into the Mo powder via hydrothermal synthesis. This work investigated the differences in mechanical properties and microstructures of the Mo-ZrO2 alloys prepared by hydrothermal synthesis and the other traditional method. As the amount of ZrO2 particles increased, the grain size of the Mo powders reduced obviously. The grains were refined obviously after sintering. The ZrO2 particles added by hydrothermal synthesis can effectively restrain the growth of grains and improve mechanical properties such as strength and hardness.

Optimization of the Fatigue Properties of INCONEL Alloy 617

1991 ◽  
Author(s):  
G. D. Smith ◽  
D. H. Yates
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Low Cycle Fatigue ◽  
Optimum Combination ◽  
Alloying Elements ◽  
Fatigue Properties ◽  
Cycle Fatigue ◽  
Alloy 617 ◽  
Inconel Alloy ◽  
Key Characteristics

Rigorous control of the annealing practice and certain alloying elements can directly influence key characteristics which aid in optimizing low cycle fatigue (LCF) properties of INCONEL® alloy 617. These procedures favorably influence grain size, carbide microstructure and mechanical properties. It is shown how an optimum combination of these procedures can greatly improve LCF properties of alloy 617 sheet.

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