Introduction to Copper and Copper Alloys

Tyler, Derek E.; Black, William T.

doi:10.31399/asm.hb.v02.a0001065

Cited by 20 publications

(6 citation statements)

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“…Remarkable dissimilarities in structural properties exist among the several alloys of each system. 13, 66 This way, significant differences in Al–Cu friction stir weldability are expected to exist according to the aluminium and copper alloys being welded. However, most of the works conducted in Al–Cu FSW are aimed to study a single welding couple, which obviously prevents the influence of base materials properties on the final welding results to be evaluated.…”

Section: Macrostructurementioning

confidence: 99%

“…3 The aluminium-to-copper (Al-Cu) dissimilar joining system, in particular, has great interest to many industrial sectors, such as power generation, electronics and transportation, where it is expected that enables to develop new engineering solutions combining the improved mechanical, thermal and electrical properties of the copper with the low specific weight and cost of the aluminium. 12,13 In addition to its industrial interest, the Al-Cu system has also important research interest. Actually, some of the main concerns regarding the Al-Cu weldability in FSW are common to other dissimilar materials systems, such as the Al-Ti (aluminium-titanium) and the Al-Fe (aluminium-steel).…”

Section: Introductionmentioning

confidence: 99%

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Critical review on friction stir welding of aluminium to copper

Galvão

Loureiro

Rodrigues

2016

Science and Technology of Welding and Joining

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The status quo of aluminium-to-copper joining by friction stir welding (FSW) drastically changed in recent years, as a result of the increased interest of the scientific community on this subject. Actually, since 2006 a large increase in the number of research groups addressing Al-Cu FSW has been witnessed all over the world, together with a significant increase in the amount of published studies. A chronological perspective on the evolution in Al-Cu FSW research is provided in this work, highlighting the pioneer and original contribution of several researchers to the current knowledge on the subject. Detailed and comprehensive investigations on the material flow mechanisms, the phenomena governing the formation and distribution of intermetallic phases during Al-Cu FSW, their relations with the welding parameters and their impact on the morphological, structural and mechanical properties of the welds are thoroughly discussed. The main findings reported in the literature are summarised in thematic tables.

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Section: Macrostructurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Critical review on friction stir welding of aluminium to copper

Galvão

Loureiro

Rodrigues

2016

Science and Technology of Welding and Joining

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“…Cu–Zn alloys containing up to ∼37% zinc contain a single phase and are called α -brass 10. They find extensive application in automotive radiator cores, tanks, fasteners, rivets, etc.…”

Section: Introductionmentioning

confidence: 99%

Effect of strain rate on acoustic emission during tensile deformation ofα-brass

Pattnaik

Jha

Sahoo

2013

Materials Science and Technology

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In the present investigation, acoustic emission (AE) technique has been used to study the effect of variation in strain rate on AE signals during tensile deformation of α-brass. Tensile tests have been carried out at four different strain rates, i.e. 3·33×10−4, 6·66×10−4, 1·33×10−3 and 2×10−3 s−1 with simultaneous monitoring of AE parameters. Results indicated that the intensity of AE signals increased with increase in strain rate, which had been attributed to the combined effect of dislocation motion and twinning. Optical microscopy results of deformed samples showed an increase in twin density, i.e. the number of twins per unit area with that of strain rate, which had a profound effect on AE cumulative counts. The fracture surface analysis of deformed sample by field emission scanning electron microscopy showed a transition from ductile to brittle behaviour with increase in the value of strain rate.

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“…However, in many cases, the use of copper is limited by the unsatisfactory properties in the surface layer, mainly its low hardness. Low wear resistance affects the use and service life of components made of copper [ 1 , 2 ]. Therefore, some attractive methods are used in surface engineering to increase the performance of components and to reduce their wear.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Implementation of Laser Surface Alloying of Cu with Cr–WC

et al. 2022

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This paper presents research on the microstructure and mechanical properties of an alloyed composite copper (Cu) surface layer, reinforced with a mixture of chromium–tungsten carbide (Cr–WC) powders. Copper alloying was performed using a high-power diode laser (HPDL). In the tests, three mixtures of powders with different percentage contents (75%Cr 25%WC, 50%Cr 50%WC, 25%Cr 75%WC) were injected into the melting pool during the laser surface alloying process. Microstructural evolution and the properties of the surface layer of copper after laser alloying were investigated. Structural investigations were performed using light microscopy, scanning and transmission electron microscopy (SEM, TEM) and X-ray diffraction (XRD). Microhardness and wear resistance of the modified surface layer were examined as well. After laser treatment the applied powders appear as uniformly distributed particles in the alloyed zone as well as nanoscale precipitates in the Cu matrix. Several types of precipitate characteristics, in terms of morphology, structure and chemical composition, were observed. Laser alloying of the surface layer modified the microstructure, which resulted in an increase in the hardness of the surface layers compared to the base material.

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Introduction to Copper and Copper Alloys

Cited by 20 publications

References 0 publications

Critical review on friction stir welding of aluminium to copper

Critical review on friction stir welding of aluminium to copper

Effect of strain rate on acoustic emission during tensile deformation ofα-brass

Investigation of the Implementation of Laser Surface Alloying of Cu with Cr–WC

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