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  • Crystallographic Effects on Microscale Machining of

    The crystallographic effects include grain size, grain boundaries (GB), and crystallographic orientation (CO) for polycrystalline materials. The size of grains (crystals), whose distribution is analyzed as a log-normal curve, has an effect on the yield stress

  • Crystallographic effects in micro/nanomachining of single

    Dec 24, 2003· The crystallographic anisotropy causes nonuniformity of the finished surface texture, microfracture topography and brittle–ductile transition boundary conditions. The results also indicate that by controlling the undeformed chip thickness below a critical value, namely, the minimum critical chip thickness (85 nm), a uniformly ductile-machined

  • Crystallographic effects in micro/nanomachining of single

    Jan 01, 2004· adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A

  • Effect of crystallographic orientation on tensile

    We also have reported the tensile fracture properties of a micrometre‐sized structure prepared with the Bosch process [].To discuss the effect of crystallographic orientations on tensile fracture properties, we measured specimens 5 μm in thickness taken from (110) SOI wafers, with various surface morphologies prepared under different fabrication condition changes and with 〈100〉, 〈110

  • Influence of AA7075 crystallographic orientation on micro

    Since the micro-grinding wheel cuts through the grain boundaries, the crystallographic effects become more significant in the micro-grinding than that in macro-machining. To quantify the effect of crystallographic

  • The effect of in-service work hardening and

    Apr 15, 2017· Micro-scratch wear on the hardened layer and crystallographic planes was analyzed. • The effect of the hardness profile on the micro-scratch changed with the normal load. • The crystallographic orientation affected the COF and the wear micromechanism. • The wear micromechanism was sensitive to specific changes in the submicrostructure.

  • Force modeling of micro-grinding incorporating

    Dec 01, 2008· So, micro-grinding is a distinctive process as compared with conventional grinding. Currently, there have been numerous studies to understand mechanical micro-machining by investigating the size effect in the specific cutting energy and crystallographic effects during micro

  • Crystallographic Effects on Microscale Machining of

    The crystallographic effects include grain size, grain boundaries (GB), and crystallographic orientation (CO) for polycrystalline materials. The size of grains (crystals), whose distribution is analyzed as a log-normal curve, has an effect on the yield stress

  • Crystallographic effects in micro/nanomachining of single

    Dec 24, 2003· The crystallographic anisotropy causes nonuniformity of the finished surface texture, microfracture topography and brittle–ductile transition boundary conditions. The results also indicate that by controlling the undeformed chip thickness below a critical value, namely, the minimum critical chip thickness (85 nm), a uniformly ductile-machined

  • Crystallographic effects in micro/nanomachining of single

    adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A

  • Effect of crystallographic orientation on tensile

    We also have reported the tensile fracture properties of a micrometre‐sized structure prepared with the Bosch process [].To discuss the effect of crystallographic orientations on tensile fracture properties, we measured specimens 5 μm in thickness taken from (110) SOI wafers, with various surface morphologies prepared under different fabrication condition changes and with 〈100〉, 〈110

  • Effect of Crystallographic Anisotropy on Micro EDM Process

    The surface roughness is seen to vary by as much as twofold with crystallographic orientation, while the ratio between the maximum and minimum values of material removal rate is 1.76. The unique material removal mechanism of micro EDM enhances the effects of crystal anisotropy on micro electrical discharge machining process.

  • Effect of Pressure on Crystallographic,Crystallite size

    Beside crystallographic parameter, micro strain and crystallite size, Axial distribution of crystallographic plane are also influenced by pressure. The most influenced crystallographic plane by pressure could be the path where whisker growth. Axial distribution are shown in figure 18-21

  • Effects of Crystallographic Structure on Machining

    A study was carried out to investigate effects of crystallographic structure on the machining performance with polycrystalline oxygen free copper (OFC) using a single crystalline diamond (SCD) micro-tool. The SCD micro-tool used in this study fabricated with a focused ion beam (FIB) has a cutting length of around 30 µm on the primary clearance face.

  • The effect of in-service work hardening and

    Apr 15, 2017· Micro-scratch wear on the hardened layer and crystallographic planes was analyzed. • The effect of the hardness profile on the micro-scratch changed with the normal load. • The crystallographic orientation affected the COF and the wear micromechanism. • The wear micromechanism was sensitive to specific changes in the submicrostructure.

  • Effects of crystal orientation and temperature on the

    In order to study the dependence of the deformation behaviour on the crystallographic orientation of NW, we rotate the atoms around the z ‐axis to 0°, 30°, 60°, 90°, 120°, respectively. To eliminate the size effect, the dimensions of all oriented NWs have the same length of 50 nm × 6 nm × 6 nm, which contain ∼1.67 × 10 5 atoms.

  • stainless steel. microstructure, texture, thin strip

    Fourth, the weak crystallographic texture and low through-thickness texture gradients of strip cast steels, which predetermine the forming properties and strength of the final strip, result in reduced anisotropy when compared to conventional hot strip material [6-13].Fifth, the microstructure and properties of strip cast austenitic 304

  • Effects of Crystallographic Anistropy on Orthogonal

    Although the effect of cutting speed was small, the uncut chip thickness was seen to have a significant orientation-dependent effect on average forces. Chip morphology, analyzed under scanning electron microscopy, showed shear-front lamella, the periodicity of which was seen to vary with crystallographic orientations and uncut chip thicknesses.

  • Crystals Free Full-Text Effect of Scan Length on

    Microstructural and crystallographic texture analyses of the as-built Cr specimens fabricated with scan lengths of 10 and 5 mm (Figure 1c,d) were conducted to clarify the possible effect of the feature sizes of the Cr specimens on the crystallographic texture characteristics.

  • Effects of Crystallographic Anistropy on Orthogonal

    Anisotropy of workpiece crystals has a significant effect in micromachining since the uncut chip thickness values used in micromachining are commensurate with characteristic dimensions of crystals in crystalline materials. This paper presents an experimental investigation on orthogonal micromachining of single-crystal aluminum at different crystallographic orientations for varying uncut chip

  • Micro-grinding temperature prediction considering the

    In addition, the Taylor factor model is used to estimate the effects of crystallographic orientation (CO) and its orientation distribution function (ODF) on the workpiece temperature by affecting the flow stress and grinding forces in micro-grinding.

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