Wear resistance of an ultrafine-grained Cu-Zr alloy processed by equal-channel angular pressing

Li, Jianwei; Wongsa-Ngam, Jittraporn; Xu, Jie; Shan, Debin; Guo, Bin; Langdon, Terence G.

doi:10.1016/j.wear.2014.12.022

Cited by 65 publications

(35 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Application of severe plastic deformation (SPD) to such bronzes leads to significant grain refinement of Cu-based solid solution and strengthening particles. [1] Previous studies showed possibility of the formation of submicrocrystalline structure and efficient aging in Cr, Zr, and CrZr bronzes by SPD methods such as equal channel angular pressing (ECAP) [2][3][4][5][6][7][8][9][10][11][12][13][14][15] and highpressure torsion (HPT). [16][17][18][19][20][21][22][23] Alloying of Cu with zirconium results in increased thermal stability due to precipitation hardening and suppression of grain growth during aging.…”

Section: Introductionmentioning

confidence: 99%

Aging Processes in Ultrafine‐Grained Low‐Alloyed Bronzes Subjected to Equal Channel Angular Pressing

2015

View full text Add to dashboard Cite

The aging processes in Cu-0.7% Cr, Cu-0.9% Hf, and Cu-0.7% Cr-0.9% Hf alloys after equal channel angular pressing have been studied. ECAP leads to strong grain refinement (200 nm for Cu-0.7% Cr-0.9% Hf alloy). It was shown that the Cu 5 Hf particles are more efficient as strengthening phase than the particles of Cr-based solid solution. Alloying with hafnium also improves the thermal stability of hardening and minimizes recrystallization processes at aging temperatures. Temperature-time aging regimes of bronzes for achieving optimal combination of strength, ductility, and electrical conductivity were also determined. Ternary alloy after aging at 500°C for 2.5 h has a tensile strength of 582 MPa, an elongation of 18%, and an electrical conductivity of 75% IACS.

show abstract

Section: Introductionmentioning

confidence: 99%

Aging Processes in Ultrafine‐Grained Low‐Alloyed Bronzes Subjected to Equal Channel Angular Pressing

2015

View full text Add to dashboard Cite

show abstract

“…As these previously ECAPed processed parts have a lower value of wear, a lower loss of volume [21][22][23][24] is obtained in the parts. In addition, a great deal of attention has been paid to the wear resistance of copper [25][26][27] and copper alloys [28] processed by severe plastic deformation processes.…”

Section: Introductionmentioning

confidence: 85%

“…In [21][22][23] ECAP is employed as a method to obtain ultrafine grain size in the billets while in [24] the SPD process known as High-Pressure Torsion (HPT) is employed. Moreover, the method mainly employed to analyse the wear in these parts is ball-on-disk [21,22,24].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Fatigue and Wear Behaviour in Ultrafine Grained Connecting Rods

Luri

Luis

León

et al. 2017

Metals

View full text Add to dashboard Cite

Abstract:Over the last few years there has been an increasing interest in the study and development of processes that make it possible to obtain ultra-fine grained materials. Although there exists a large number of published works related to the improvement of the mechanical properties in these materials, there are only a few studies that analyse their in-service behaviour (fatigue and wear). In order to bridge the gap, in this present work, the fatigue and wear results obtained for connecting rods manufactured by using two different aluminium alloys (AA5754 and AA5083) previously deformed by severe plastic deformation (SPD), using Equal Channel Angular Pressing (ECAP), in order to obtain the ultrafine grain size in the processed materials are shown. For both aluminium alloys, two initial states were studied: annealed and ECAPed. The connecting rods were manufactured from the previously processed materials by using isothermal forging. Fatigue and wear experiments were carried out in order to characterize the in-service behaviour of the components. A comparative study of the results was made for both initial states of the materials. Furthermore, Finite Element Modelling (FEM) simulations were used in order to compare experimental results with those obtained from simulations. In addition, dimensional wear coefficients were found for each of the aluminium alloys and initial deformation states. This research work aims to progress the knowledge of the behaviour of components manufactured from ultrafine grain materials.

show abstract

“…Various studies have been performed to show the importance of these methods in improving the properties of different materials. Significant improvement in tensile strength 7 , fatigue resistance 8 , impact toughness 9 , wear resistance 10,11 , corrosion behavior 12,13 superplasticity 14,15 , formability 16 , etc were observed using this method.…”

Section: Introductionmentioning

confidence: 95%

An Investigation on the Deformation Heating in Billet and Die During Equal-Channel Angular Pressing and High-Pressure Torsion

Karami

2016

Mat. Res.

View full text Add to dashboard Cite

This work aims to investigate the temperature rise in Aluminum alloy 6061 due to deformation heating in equal channel angular pressing (ECAP) and high-pressure torsion (HPT) processes using finite element method. The roles of various parameters are investigated and the heating of ECAP die due to billet deformation is included in the simulations. The results show that while the work-piece moves in the exit channel, the generated heat is transferred to die via conduction and therefore the temperature isosurfaces in die are extended in the direction of inlet and exit channels. The dependency of maximum work-piece temperature to velocity is more than its dependency to friction. Increasing the plunger velocity increases the difference between maximum and minimum temperatures. Additionally, the maximum work-piece temperature is attained at the deformation zone. The temperature rise in HPT is less than ECAP due to the small size of the HPT work-piece compared to ECAP. Not only the work-piece size, but also the good heat conduction of aluminum makes the temperature distribution roughly uniform in HPT.

show abstract

Wear resistance of an ultrafine-grained Cu-Zr alloy processed by equal-channel angular pressing

Cited by 65 publications

References 41 publications

Aging Processes in Ultrafine‐Grained Low‐Alloyed Bronzes Subjected to Equal Channel Angular Pressing

Aging Processes in Ultrafine‐Grained Low‐Alloyed Bronzes Subjected to Equal Channel Angular Pressing

Analysis of Fatigue and Wear Behaviour in Ultrafine Grained Connecting Rods

An Investigation on the Deformation Heating in Billet and Die During Equal-Channel Angular Pressing and High-Pressure Torsion

Contact Info

Product

Resources

About