کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1656989 1517603 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of sequential turning and burnishing on the surface integrity of Cr–Ni-based stainless steel formed by laser cladding process
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Effect of sequential turning and burnishing on the surface integrity of Cr–Ni-based stainless steel formed by laser cladding process
چکیده انگلیسی


• Surface integrity including interfacial properties was analyzed systematically.
• Five-axial polar diagram was used for comprehensive evaluation of surface integrities.
• Hybrid processing chain with LPB and finish turning for cladding cutting was proposed.
• Both additive manufacturing and subsequent cutting processes were considered.

Laser cladding has been developed to be an important surface modification technique in re-manufacturing and maintenance fields. However, few components can be fabricated directly to their final shape and simultaneously met the dimension and accuracy requirements by laser cladding method. A ball burnishing process has been adopted as an alternative finishing approach to grinding process. The effects of sequential turning and burnishing process on surface topography, residual stress, microhardness, porosity content and bonding strength of the Cr–Ni-based stainless steel cladding were systematically investigated in this research. Surface topography, residual stress and microhardness were improved by the sequential burnishing process due to the plastic deformation caused by rolling ball. Biaxial compressive residual stress states were generated in the cladding layer. Both the porosity and bonding strength of cladding layer were improved because of the generation of compressive residual stress. The bonding strength of the cladding layer showed several times higher than other coatings formed by high velocity oxy-fuel (HVOF) as well as plasma spraying. The surface integrities of the cladding layers were further evaluated with five-axial polar diagrams. Burnishing process showed a dependency on the pre-procedure, while smooth surfaces would weaken the burnishing effect induced by the rolling ball. The processing chain, sequential turning with wiper insert adopting a high feed rate and burnishing process, is optimized based on the required surface integrity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 276, 25 August 2015, Pages 327–335
نویسندگان
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