Influence of Bond Material Concentration on the Mechanical Properties of Fixed Abrasive Lapping Tool for Stainless Steel

To improve the machining efficiency as well as surface roughness, a resin-bonded fixed abrasive tool is developed for lapping process of stainless steel substrate. To optimize the lapping ability of the fixed abrasive tool, the influences of bond material concentration on the mechanical properties of fixed abrasive lapping tool, including structure hardness, shear strength, the water-absorbing capacity and modulus of elasticity in compression are investigated. The micro structure of tools is also observed. Tools made of #1000 SiC abrasive and resin with different concentrations is employed in the tests. It is found, the hardness, shear strength, and modulus of elasticity in compression reach highest value, as the 35%wt bond material are used. The water-absorbing capacity increases as the bond material concentration decreases. It is judged from the SEM images that the number of pores in tool with 35%wt bond material is at the most.

Download Full-text

Influences of Properties of Fixed Abrasive Tool on the Lapping Process of Stainless Steel Substrate

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.135.365 ◽

2010 ◽

Vol 135 ◽

pp. 365-369

Author(s):

Cong Rong Zhu ◽

Bing Hai Lv ◽

Ju Long Yuan

Keyword(s):

Surface Roughness ◽

Stainless Steel ◽

Material Removal Rate ◽

Material Removal ◽

Stainless Steel Substrate ◽

Removal Rate ◽

Steel Substrate ◽

Abrasive Tool ◽

Bonding Material ◽

Fixed Abrasive

To improve the machining efficiency as well as surface roughness, a series of experiments employed fixed abrasive tools are carried out for stainless steel substrate, and influences of properties of fixed abrasive tool on the lapping process are studied. It is found that the resin is the best bonding material in this study. The surface roughness under different concentration of bonding material is similar, and the material removal rate (MRR) increases as the concentration of bonding material decreases from 50% to 20%. But too little of bonding material results into low bond strength that causing low material removal rate. It is also found that higher shear strength, lower wear rate, and the shear strength of the tool with 35% bonding material is the highest. It is obvious that the surface roughness and material removal rate decline as the grit size decreases. The roughness of surface lapped with resin bonded 4000# SiC abrasive tool comes to 18nm, and the material removal rate is 0.63μm/min.

Download Full-text

Microstructural, thermal and mechanical properties of HVOF sprayed Ni–Al-based bond coatings on stainless steel substrate

Journal of Materials Processing Technology ◽

10.1016/j.jmatprotec.2007.11.036 ◽

2008 ◽

Vol 204 (1-3) ◽

pp. 221-230 ◽

Cited By ~ 41

Author(s):

O. Culha ◽

E. Celik ◽

N.F. Ak Azem ◽

I. Birlik ◽

M. Toparli ◽

...

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Stainless Steel Substrate ◽

Steel Substrate ◽

Thermal And Mechanical Properties ◽

Bond Coatings

Download Full-text

Influence of Heat Treatment on the Mechanical Properties of Ni Films on 430 Stainless Steel Substrate

High Temperature Materials and Processes ◽

10.1515/htmp-2016-0025 ◽

2017 ◽

Vol 36 (8) ◽

pp. 855-861

Author(s):

Yong Pan ◽

Junwei Cui ◽

Weixin Lei ◽

Jie Zhou ◽

Zengsheng Ma

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Stainless Steel ◽

Stainless Steel Substrate ◽

Steel Substrate ◽

X Ray Diffraction ◽

Before And After ◽

430 Stainless Steel ◽

Different Temperatures ◽

Texture Orientation

AbstractEffects of heat treatment on the mechanical properties of Ni films on 430 stainless steel substrate were investigated. The Ni films were annealed at heat treatment temperatures ranging from 0 °C to 800 °C for 2 h. The surface morphology, composition, and texture orientation of Ni films were studied by scanning electron microscopy, energy dispersive spectrometry, and X-ray diffraction. The load–indentation depth curves of Ni films before and after heat treatment were measured by using nanoindentation method. In conjunction with finite element modeling and dimensional analysis, the stress–strain relationships of Ni films on 430 stainless steel substrate at different temperatures are successfully obtained by using a power-law hardening model.

Download Full-text

Heat Input Effect on Microstructure and Mechanical Properties of Electron Beam Additive Manufactured (EBAM) Cu-7.5wt.%Al Bronze

Materials ◽

10.3390/ma14226948 ◽

2021 ◽

Vol 14 (22) ◽

pp. 6948

Author(s):

Andrey Filippov ◽

Nikolay Shamarin ◽

Evgeny Moskvichev ◽

Nikolai Savchenko ◽

Evgeny Kolubaev ◽

...

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Stainless Steel ◽

Electron Beam ◽

Heat Input ◽

Stainless Steel Substrate ◽

Tensile Axis ◽

Steel Substrate ◽

Equiaxed Grains ◽

Wire Feed

Electron beam additive wire-feed deposition of Cu-7.5wt.%Al bronze on a stainless-steel substrate has been carried out at heat input levels 0.21, 0.255, and 0.3 kJ/mm. The microstructures formed at 0.21 kJ/mm were characterized by the presence of both zigzagged columnar and small equiaxed grains with 10% of Σ3 annealing twin grain boundaries. No equiaxed grains were found in samples obtained at 0.255 and 0.3 kJ/mm. The zigzagged columnar ones were only retained in samples obtained at 0.255 kJ/mm. The fraction of Σ3 boundaries reduced at higher heat input values to 7 and 4%, respectively. The maximum tensile strength was achieved on samples obtained with 0.21 kJ/mm as tested with a tensile axis perpendicular to the deposited wall’s height. More than 100% elongation-to-fracture was achieved when testing the samples obtained at 0.3 kJ/mm (as tested with a tensile axis coinciding with the wall’s height).

Download Full-text

Stress corrosion and mechanical properties of zinc coating on 304 stainless steel

Materials Testing ◽

10.1515/mt-2020-0035 ◽

2021 ◽

Vol 63 (3) ◽

pp. 209-218

Author(s):

Hua Zhang ◽

Sihan Zheng ◽

Yue Wang ◽

QiLiang Li ◽

Jie Tao ◽

...

Keyword(s):

Mechanical Properties ◽

Fracture Toughness ◽

Stainless Steel ◽

Stress Corrosion ◽

Stainless Steel Substrate ◽

Steel Substrate ◽

Zinc Coating ◽

304 Stainless Steel ◽

Three Point Bending ◽

Indentation Tests

Abstract The effect of stress corrosion on the mechanical properties of the coating in the zinc coating/304 stainless steel substrate system was investigated by three-point bending, slow strain rate tensile (SSRT) and nano-indentation tests. Studies have shown that fracture toughness was improved when the coating was thick but weakened when the coating was thin. At varied coating thicknesses (80 μm, 160 μm, 240 μm, 320 μm, 400 μm), the decline rates of the fracture toughness were 77.48 %, 71.82 %, 66.67 %, 55.48 % and 51.52 %, respectively, and those for the critical strain of crack initiation were 94.97 %, 91.88 %, 88.42 %, 76.19 % and 74.33 %, respectively. In addition, simulations were made to analyze the crack propagation of zinc coating in coating/substrate system under tensile loading by ABAQUS, which proved the accuracy of the experiment.

Download Full-text

Structure and Properties of TaCx Coating on Biomedical 316L Stainless Steel by RF Magnetron Sputtering

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.419-420.537 ◽

2009 ◽

Vol 419-420 ◽

pp. 537-540

Author(s):

Ming Hui Ding ◽

Ben Li Wang ◽

Li Li ◽

Yu Feng Zheng

Keyword(s):

Stainless Steel ◽

Magnetron Sputtering ◽

Platelet Adhesion ◽

316L Stainless Steel ◽

Mechanical Characteristics ◽

Stainless Steel Substrate ◽

Steel Substrate ◽

Rf Magnetron Sputtering ◽

Sem Images ◽

A New Species

In this paper, the TaCx coating with thickness around 1.2 μm was prepared by radio frequency magnetron sputtering technique on the 316L stainless steel substrate to improve its hemocompatibility. The structure and morphology of the coating were characterized by XRD and SEM. The XRD results indicated that TaCx, as a new species, appeared on the surface of the 316L stainless steel substrate. SEM images showed that the surface morphology of the TaCx coating was uniform and dense. The mechanical characteristics of the coating were measured by nanoindentation, giving a nanohardness of 13 GPa and a Young’s modulus of 210 GPa. The adhesion strength of the TaCx coating to 316L stainless steel depended on the sputtering bias voltages and increased for a higher bias voltage. The hemocompatibility of the TaCx coating, as evaluated by platelet adhesion tests, was compared to that of the bare 316L stainless steel. The results indicated that the hemocompatibility of 316L stainless steel with TaCx coating was significantly improved as compared to the original one.

Download Full-text