...Bheemavarapu Subba Rao; Thella Babu Rao; Mondi Rama Karthik This paper investigates the effects of a 6-hour direct aging heat treatment at 490 °C on the mechanical, tribological, and microstructure characteristics of laser powder bed fused maraging 300 steels, which is produced at various laser...

... austenitic stainless steel, and Stellite 6 are identified as potential coating materials for the disc based on Cobweb analysis and are welded to the disc using metal active gas (MAG) welding (312 and 316 steel coatings) and powder plasma arc welding (Stellite 6 coating). Microstructural analyses and Vickers...

... surface rolling GCr15 bearing steel fretting wear microstructure surface layers surface treatments wear mechanisms National Natural Science Foundation of China 10.13039/501100001809 No. 52105185 Bearing is the “joint” of the mechanical system. The most widely used material...

..., ( b ) cross-sectional TEM image acquired from Fig. 12( a ) SEM Image of (a) wear surface, (b) cross-sectional TEM image acquired from Fig. 12(a) The microstructures of the glaze layer of Haynes 25 after friction are characterized by TEM/EDS, as shown in Figs. 12 and 13 . The cross-section...

...Nthabiseng Ntholeng; Nthape Percyval Mphasha; Itshepeng Mogaleadi Christinah Bopape; Enoch Nifise Ogunmuyiwa; Mxolisi Brendon Shongwe The influence of annealing on the microstructure, mechanical and sliding wear characteristics of Ni-based alloys produced by spark plasma sintering (SPS...

... ournal of T ribology . 30 05 2022 15 08 2022 20 08 2022 26 09 2022 electroless coatings microstructure micro-scratching friction coefficient wear mechanism Performance and cost are two important criterion material candidates are expected to excel in to be able...

...X. H. Wang; S. S. Liu; G. L. Zhao; M. Zhang In situ TiN ceramic particle reinforced FeCoNiCrMnTi high entropy alloy coating was fabricated by laser cladding processing at high purity nitrogen gas atmosphere on the AISI 304 stainless steel substrate. The effect of Ti addition on the microstructure...

... composite fabricated by DED and its wear behavior and mechanism have been rarely reported. In the current study, a novel Al matrix composite with quasicrystal (QC) and metastable phases as reinforcements was fabricated in situ by DED from Al 91 Fe 4 Cr 5 powders. The heterogeneous microstructure...

... property data under controlled conditions that may not map to the entire range of geometries over a part. Described here is the development of a modeling tool enabling prediction of the performance of parts built with AM, with rigorous consideration of the microstructural properties governing...

...% CuLa (marked by mbabbitt-2). First, bare Babbitt was modified with different contents of CuLa. The microstructure, microhardness, and wettability of Babbitt were tested and studied. Then, the tribological properties of bare Babbitt, mBabbitt-1, and mBabbitt-2 were conducted by the reciprocating mode...

... and subsurface layers. This work addresses the influence of selected deep rolling parameters (pressure, speed, feed, and number of passes) on the surface integrity (roughness, surface and subsurface microhardness, and microstructure) of AISI 1020, AISI 1065, and AISI 1080 carbon steels. Deep rolling...

...Bhupinder Singh; Sunny Zafar Metal matrix composite (MMC) clads were developed through microwave cladding technique on CA6NM substrate using different microwave power levels. The influence of microwave power was investigated on the microstructure, phase evolution, mechanical properties, and erosion...

...Y. Yang; Y. Zhu; H. Yang Selective laser melting (SLM) is a rapidly developing metal additive manufacturing technology. SLM process parameters have a direct impact on the microstructure of parts, which further affect wear behaviors. Increasing the wear resistance by tailoring process parameters...

... min. Phase analysis of processed composites revealed the formation of some hard-intermetallic compounds such as nickel silicides (NiSi, Ni 2 Si, and Ni 3 Si 2 ) and carbides (Cr 3 C 2 and Cr 7 C 3 ). Microstructure analysis confirms the favorable growth of equiaxed grains with uniform dispersion...

..., in which mild and severe wear regions were indicated. The differences in microstructure as well as microhardness in subsurfaces were compared between samples worn in the two different regions. The dynamic recrystallization (DRX) softening of the surface material was found to be responsible for mild-severe...

...Prosanta Biswas; Manas Kumar Mondal; Durbadal Mandal The microstructural morphology and wear behavior of as-cast Al–X wt% Mg 2 Si (X = 0.0, 5.0, 10.0, 15.0, and 20.0) composites were investigated through optical microscopy (OM), energy dispersive X-ray (EDX) spectrometry, scanning electron...

... microwave hybrid heating (MHH) technique. The developed composite clads showed the refined microstructure with the existence of randomly dispersed reinforcement particles inside the Ni based matrix. The phase analysis study results of the clad region revealed the formation of various hard phases of Co 3 W 3...

... volumetric wear cobalt chromium molybdenum (CoCrMo) alloy bovine calf serum lubricant microstructure According to the Arthritis Foundation, more than 46 million Americans have arthritis [ 1 ]. The Centers for Disease Control estimate that the annual burden from arthritis in the U.S. includes...

...Nick Weinzapfel; Farshid Sadeghi; Vasilios Bakolas; Alexander Liebel Rolling contact fatigue of rolling element bearings is a statistical phenomenon that is strongly affected by the heterogeneous nature of the material microstructure. Heterogeneity in the microstructure is accompanied by randomly...

... the influence of the random microstructure topology on subsurface stress distributions in Hertzian contacts. In this paper, a finite element model for analyzing subsurface stresses in an elastic half-space subjected to a general Hertzian contact load with explicit consideration of the material microstructure...