Study on cutting performance of SiCp/Al composite using textured YG8 carbide tool

AbstractPrecision machining of SiCp/Al composites is a challenge due to the existence of reinforcement phase in this material. This work focuses on the study of the textured tools’ cutting performance on SiCp/Al composite, as well as the comparison with non-textured tools. The results show that the micro-pit textured tool can reduce the cutting force by 5–13% and cutting length by 9–39%. Compared with non-textured tools, the cutting stability of the micro-pit textured tools is better. It is found that the surface roughness is the smallest (0.4 μm) when the texture spacing is 100 μm, and the residual stress can be minimized to around 15 MPa in the case of texture spacing 80 μm. In addition, the SiC particles with size of around 2–12 μm in the SiCp/Al composite may play a supporting role between the texture and the chips, which results in three-body friction, thereby reducing tool wear, sticking, and secondary cutting phenomenon. At the same time, some SiC particles enter into the micro-pit texture, so that the number of residual particles on the surface is reduced and the friction between the tool and the surface then decreases, which improves the surface roughness, and reduces the surface residual stress.

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Study on cutting performance of SiCp/Al composite using textured tool

10.21203/rs.3.rs-302368/v1 ◽

2021 ◽

Author(s):

Xu Wang ◽

Valentin L. Popov ◽

Zhanjiang Yu ◽

Yiquan Li ◽

Jingkai Xu ◽

...

Keyword(s):

Cutting Tools ◽

Contact Length ◽

Cutting Performance ◽

Surface Residual Stress ◽

Machined Surface ◽

Micro Cutting ◽

Al Composite ◽

Micro Hole ◽

Pulsed Fiber Laser ◽

Secondary Cutting

Abstract In the micro cutting process of SiCp/Al composites, the tool wear is serious due to the existence of reinforcement phase in the material, which greatly affects the machined surface integrity. In order to reduce the friction and adhesion at the tool-chip interface, fabricating micro texture on the tool surface could be a feasible solution. This work focuses on the study of the cutting performance of the textured cutting tools through micro cutting of SiCp/Al composites. The experiments were carried out using NTK-KM1CCGW060202H uncoated cemented carbide tools with micro-hole textures developed by pulsed fiber laser. The results indicate that the micro-textured tools can reduce the wear, sticking and the contact length between the tool-chip. Also, the surface quality can be improved. It is observed from the chip’s surface that the micro-textured tool can produce secondary cutting when machining SiCp/Al composite materials, the smaller the texture spacing, the more obvious the secondary cutting phenomenon. Furthermore, the cutting forces can be reduced using the micro-textured tool in most cases. However, when the texture spacing is too small the cutting force does not decrease. Finally, the surface roughness and surface residual stress of the machined workpiece are investigated. Textured tools have better results.

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TEM investigations of surface residual stress relaxation in A12O3 and Al2O3-SiC nanocomposite

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100170876 ◽

1994 ◽

Vol 52 ◽

pp. 628-629

Author(s):

J. Fang ◽

H. M. Chan ◽

M. P. Harmer

Keyword(s):

Residual Stress ◽

Single Phase ◽

Stress Relief ◽

Stress Recovery ◽

Surface Residual Stress ◽

Microscopic Mechanism ◽

Sic Particles ◽

Annealing Procedure ◽

The Difference ◽

Nano Size

It was Niihara et al. who first discovered that the fracture strength of Al2O3 can be increased by incorporating as little as 5 vol.% of nano-size SiC particles (>1000 MPa), and that the strength would be improved further by a simple annealing procedure (>1500 MPa). This discovery has stimulated intense interest on Al2O3/SiC nanocomposites. Recent indentation studies by Fang et al. have shown that residual stress relief was more difficult in the nanocomposite than in pure Al2O3. In the present work, TEM was employed to investigate the microscopic mechanism(s) for the difference in the residual stress recovery in these two materials.Bulk samples of hot-pressed single phase Al2O3, and Al2O3 containing 5 vol.% 0.15 μm SiC particles were simultaneously polished with 15 μm diamond compound. Each sample was cut into two pieces, one of which was subsequently annealed at 1300° for 2 hours in flowing argon. Disks of 3 mm in diameter were cut from bulk samples.

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Relationship between Surface Roughness before and after UDR Treating

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.707.90 ◽

2014 ◽

Vol 707 ◽

pp. 90-93

Author(s):

Li Li ◽

Wei Li ◽

Tao Li

Keyword(s):

Residual Stress ◽

Surface Roughness ◽

Surface Profile ◽

Deep Rolling ◽

Surface Residual Stress ◽

Original Surface ◽

Before And After

A series of samples which have different surface roughness made by 45 steel were treated by Ultrasonic Deep Rolling (UDR), influence of original surface roughness on UDR effects, such as surface profile, surface roughness and residual stress, were studied. Results shows that surface roughness was reduced substantially through UDR treating and lager the original surface roughness, larger surface roughness and surface residual stress induced by UDR treating.

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Investigation of Surface Integrity in Conventional Grinding of Ti-6Al-4V

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.126-128.899 ◽

2010 ◽

Vol 126-128 ◽

pp. 899-904 ◽

Cited By ~ 5

Author(s):

Guo Giang Guo ◽

Zhi Qiang Liu ◽

Xiao Jiang Cai ◽

Qing Long An ◽

Ming Chen

Keyword(s):

Residual Stress ◽

Surface Roughness ◽

Surface Integrity ◽

Ground Surface ◽

Surface Residual Stress ◽

Machined Surface ◽

Conventional Grinding ◽

Metallurgical Structure ◽

Mechanical Factors ◽

Deformation Layer

This paper investigates the surface integrity of Ti-6Al-4V in conventional grinding using SiC abrasive, it includes surface roughness, surface topography, surface residual stress and metallurgical structure alteration. The experiment result indicated that grinding depth and feed rate have significant effect on surface roughness. Workpiece ground surface was free of crack, but severe plastic deformation layer and light burn appeared because of chemical reactions and mechanical factors. Ground surface was in a state of high tensile residual stress, thermal cycling of surface layer had the greatest effect. The machined surface experienced microstructure alteration on the top layer of ground surface, a heat-affected zone (HAZ) was observed.

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Influence of Original Surface Roughness on Ultrasonic Deep Rolling Effects

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1003.105 ◽

2014 ◽

Vol 1003 ◽

pp. 105-108

Author(s):

Dong Pei ◽

Fang Gang Deng ◽

Jun Wei Hu ◽

Zhong Jun Yang ◽

Li Li

Keyword(s):

Residual Stress ◽

Surface Roughness ◽

Surface Profile ◽

Deep Rolling ◽

Surface Residual Stress ◽

Original Surface

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Influence law and optimization analysis of technological parameters of TC4 titanium alloy on water cavitation peening

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

10.1177/09544054211041070 ◽

2021 ◽

pp. 095440542110410

Author(s):

Fuzhu Li ◽

Jun Guo ◽

Shangshuang Chen ◽

Yuqin Guo ◽

Ruitao Li ◽

...

Keyword(s):

Residual Stress ◽

Surface Roughness ◽

Titanium Alloy ◽

Process Parameters ◽

Nozzle Diameter ◽

Main Process ◽

Strengthening Effect ◽

Surface Residual Stress ◽

Influence Of Process Parameters ◽

Tc4 Titanium Alloy

TC4 titanium alloy is widely used in aerospace, petrochemical, pharmaceutical and other fields, which accounts for about 60% of the current titanium alloy products. Water Cavitation Peening (WCP) is a new material surface modification process and has great development potential. The improvement of the water cavitation peening is severely limited by the correlation and coupling between process parameters. Therefore, the influence law of each process parameter is the key problem that needs to be resolved. TC4 titanium alloy as research object is took and four main process parameters of WCP under four working conditions is construct (four factors and four levels orthogonal). The influence of process parameters on three evaluation indexes is studied, such as the surface residual stress, the surface roughness and the microhardness. Then, the fuzzy mathematics comprehensive evaluation is used to optimize. Results show that the peening time has the greatest influence on strengthening effect and the nozzle diameter has the least. The optimized combination is that the nozzle diameter is 1.4 mm, the incident pressure is 40 MPa, the dimensionless target distance is 72.5 and peening time is 27.5 min. The corresponding surface residual stress, the surface roughness and the microhardness can reach −612 MPa, 0.76 μm, and 405 HV respectively.

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Effect of Post Treatment on the Microstructure, Surface Roughness and Residual Stress Regarding the Fatigue Strength of Selectively Laser Melted AlSi10Mg Structures

Journal of Manufacturing and Materials Processing ◽

10.3390/jmmp3040089 ◽

2019 ◽

Vol 3 (4) ◽

pp. 89 ◽

Cited By ~ 4

Author(s):

Wolfgang Schneller ◽

Martin Leitner ◽

Sebastian Pomberger ◽

Sebastian Springer ◽

Florian Beter ◽

...

Keyword(s):

Residual Stress ◽

Surface Roughness ◽

Fatigue Strength ◽

Residual Stresses ◽

Hot Isostatic Pressing ◽

Three Dimensional ◽

Fatigue Behaviour ◽

Post Treatment ◽

Contributing Factors ◽

Surface Residual Stress

This paper focusses on the effect of hot isostatic pressing (HIP) and a solution annealing post treatment on the fatigue strength of selectively laser melted (SLM) AlSi10Mg structures. The aim of this work is to assess the effect of the unprocessed (as-built) surface and residual stresses, regarding the fatigue behaviour for each condition. The surface roughness of unprocessed specimens is evaluated based on digital light optical microscopy and subsequent three-dimensional image post processing. To holistically characterize contributing factors to the fatigue strength, the axial surface residual stress of all specimens with unprocessed surfaces is measured using X-ray diffraction. Furthermore, the in-depth residual stress distribution of selected samples is analyzed. The fatigue strength is evaluated by tension-compression high-cycle fatigue tests under a load stress ratio of R = −1. For the machined specimens, intrinsic defects like pores or intermetallic phases are identified as the failure origin. Regarding the unprocessed test series, surface features cause the failures that correspond to significantly reduced cyclic material properties of approximately −60% referring to machined ones. There are beneficial effects on the surface roughness and residual stresses evoked due to the post treatments. Considering the aforementioned influencing factors, this study provides a fatigue assessment of the mentioned conditions of the investigated Al-material.

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Experimental Investigation on Grinding Surface Condition of 9Mn2V under Different Tempering Processes

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.565.88 ◽

2012 ◽

Vol 565 ◽

pp. 88-93

Author(s):

Ming Chen ◽

Da Peng Dong ◽

Guo Giang Guo ◽

Qing Long An

Keyword(s):

Residual Stress ◽

Surface Roughness ◽

Experimental Investigation ◽

Energy Surface ◽

Surface Condition ◽

Ground Surface ◽

Micro Hardness ◽

Surface Residual Stress ◽

Specific Grinding Energy ◽

The Times

This paper investigates the surface condition of 9Mn2V in conventional surface grinding using SG abrasive under different tempering processes, which includes metallographic structure, micro-hardness, specific grinding energy, surface roughness, surface morphology and surface residual stress. The experimental results indicated that the specific grinding energy increased after the completion of tempering. The ground surface quality improved evidently with the times of tempering increasing. Meanwhile the ground surface was in a state of high tensile residual stress after quenching. After the second time of tempering, the residual stress had significantly been reduced.

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Surface Integrities of Different Trajectories in Belt Grinding for Pure Iron Functional Performance Test Pieces

Crystals ◽

10.3390/cryst9030123 ◽

2019 ◽

Vol 9 (3) ◽

pp. 123 ◽

Cited By ~ 1

Author(s):

Ying Liu ◽

Wentao Dai ◽

Guijian Xiao ◽

Yun Huang

Keyword(s):

Residual Stress ◽

Surface Roughness ◽

Functional Properties ◽

Pure Iron ◽

Performance Test ◽

Functional Performance ◽

Micro Hardness ◽

Belt Grinding ◽

Surface Residual Stress ◽

Abrasive Belt

In order to reduce the influence of surface burns and other defects in the processing of pure iron parts for a functional properties test, and to improve the accuracy and usability of the test results, abrasive belt grinding is used for surface grinding. Because of the long circumference of the belt, and the long cooling time of the abrasive particles, cold grinding can be achieved, so that the incidence of surface burns, machining hardening, and other defects can be reduced. An experimental platform for belt grinding of pure iron parts for a functional properties test was built, and corresponding belt grinding experiments were carried out. The influences of grinding parameters, such as belt velocity, feed velocity, the grinding track on the microcosmic morphology, surface roughness, surface residual stress, and micro-hardness were studied. The results showed that belt grinding improved the surface integrity, the surface roughness was less than Ra 0.4 μm, the surface residual stress ranged from −253.84 MPa to −164.14 MPa, and the micro-hardness ranged from 118 HV to 170 HV. Furthermore, to get the workpiece surface to mostly suit the functional performance test, a high abrasive belt linear speed, a low grinding depth, and a feed speed should be selected, and the processing should be conducted with a circular trajectory.

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