Improvement of tensile properties of pure Cu and CuCrZr alloy by cryo-rolling process

Ihira, Ryota; Gwon, Hyoseong; Kasada, Ryuta; Konishi, Satoshi

doi:10.1016/j.fusengdes.2016.02.070

Cited by 15 publications

(4 citation statements)

References 8 publications

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“…When pressure was applied to the SLM alloy, the strong metallurgical bonding between the particles hinders sliding of the grains over one another; therefore, hardness of the alloy was improved. Cu-Cr-Zr belongs to the precipitation hardened copper alloy [26][27][28]. When laser power was 460 W, scanning speed was 900 mm/s, the hatching speed was 0.06 mm and hardness of the SLM alloy rose to 119 HV, which might be due to the precipitation of some Cr atoms.…”

Section: Effect Of Process Parameters On the Hardness Of Slm Alloymentioning

confidence: 99%

Mechanical Properties of High-Strength Cu–Cr–Zr Alloy Fabricated by Selective Laser Melting

et al. 2020

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The approximate process range for preparing the Cu–Cr–Zr alloy by selective laser melting (SLM) was determined by ANSYS simulation, and the influence of the SLM process parameters on the comprehensive properties of the SLM-formed alloy was studied by the design of experiments. The Cu–Cr–Zr alloy with optimum strength and hardness was prepared with high efficiency by optimizing the process parameters for SLM (i.e., laser power, scanning speed, and hatching distance). It is experimentally shown that tensile strength and hardness of the SLM alloy are increased by increasing laser power and decreasing scanning speed, whereas they are initially increased and then decreased by increasing the hatching distance. Moreover, strength, roughness and hardness of the SLM alloy are optimized when laser power is 460 W, scanning speed is 700 mm/s and hatching distance is 0.06 mm. The optimized properties of the SLM alloy are a tensile strength of 153.5 MPa, hardness of 119 HV, roughness of 31.384 μm and relative density of 91.62%.

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Section: Effect Of Process Parameters On the Hardness Of Slm Alloymentioning

confidence: 99%

Mechanical Properties of High-Strength Cu–Cr–Zr Alloy Fabricated by Selective Laser Melting

et al. 2020

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“…The main disadvantage of this is producing relatively small samples. To produce UFG materials with unlimited length, there were designed methods such as accumulative roll-bonding (ABR) [6], equal channel angular rolling (ECAR) [7][8][9][10], asymmetric rolling (ASR) [11][12][13][14] and cryo-rolling (CR) [16][17][18]. At the present time, asymmetric rolling has become a subject of intensive scientific research due to the simplicity of equipment configuration and promising results.…”

Section: Introductionmentioning

confidence: 99%

The mechanical properties of OFHC copper and CuCrZr alloys after asymmetric rolling at ambient and cryogenic temperatures

et al. 2018

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This work deals with comparing the mechanical properties of OFHC copper and CuCrZr alloys processed by asymmetric ambient rolling (ASaR) and asymmetric cryorolling (AScR). The conditions for asymmetrical rolling were ensured by different diameters of the main rolls. The thickness of samples was reduced about 20% - 70% at ambient temperature and at a temperature of liquid nitrogen. Mechanical properties such as yield strength, tensile strength, reduction of area and microhardness were determined for all rolled samples. Rolling at cryogenic temperatures provide about 50-60MPa more tensile strength for Cu and 60-80 MPa for CuCrZr alloys when rolling at ambient temperature. After AScR of CuCrZr alloys, a start of precipitation was shifted at the temperature of 434∘C and recrystallization was a part of the precipitation peak. According to the results, plastic deformation through shear bands is the dominant mechanism in materials with lower stacking fault energy (CuCrZr) treated under cryogenic conditions.

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“…[3] The values of the attributes for the selected materials were collected from open literature and depicted in Table 2. [3,[19][20][21][22] Determining the Weight of W j of the Criteria Let x ij be performance score of i th alternative of j th parameter The relative significance of each criterion is calculated as follows:…”

Section: Determining the Criteriamentioning

confidence: 99%

Selection of Spot Welding Electrode Material by Preference Ranking Organization Method for Enrichment Evaluation, VIKOR and WASPAS Methods

Bachchhav,

Chaitanya

2023

SMSJ

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Selection of electrode material for spot welding operation is a complex task due to compromising properties such as electrical conductivity and the strength of material, although limited materials possess them collectively. This research aims to rank eight discrete classes of Cr-Zr, Cu-Be, Cu-Cd, Cu-Cr-Zr, Cu-Ti and Cu-W spot welding electrode materials based on PROMETHEE, VIKOR and WASPAS methods. Preliminary screening of essential attributes was performed using Analytical Hierarchy Process (AHP). It was observed that Cu-Cr-Zr is ranked as the best candidate material by all three MADM methods. However, the selection is based on availability, manufacturability, environment protection rules and cost. This paper suggested an approach for electrode manufacturers and end users to select reliable spot welding electrode material to achieve high weld quality

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Improvement of tensile properties of pure Cu and CuCrZr alloy by cryo-rolling process

Cited by 15 publications

References 8 publications

Mechanical Properties of High-Strength Cu–Cr–Zr Alloy Fabricated by Selective Laser Melting

Mechanical Properties of High-Strength Cu–Cr–Zr Alloy Fabricated by Selective Laser Melting

The mechanical properties of OFHC copper and CuCrZr alloys after asymmetric rolling at ambient and cryogenic temperatures

Selection of Spot Welding Electrode Material by Preference Ranking Organization Method for Enrichment Evaluation, VIKOR and WASPAS Methods

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