... treatment due to the inevitable reversion of metastable martensite to the stable reverted γ′ phase. The heat-treated samples' microhardness rises with rising the laser energy density (LED) from 61.41 to 92.10 J/mm 3 due to a decrease in the reversed austenite phase and a further rise in LED decreases...

... diffractometer, a surface profiler, a microhardness tester, and a ball-disc tribometer. With 1045 steel as the control group, the same treatment parameters (treatment with 5 min, 200 V of voltage, 5% boric acid, and 10% ammonium chloride) were implemented on various steel substrates. It was found that a low...

... such as gamma-Ni, FeNi 3 , Ni 3 B, Cr 23 C 6 , Ni 3 Si, and W 2 C commonly in all the processed composite claddings. The microhardness of the claddings was measured between 791 and 1086 HV 0.2 for increasing the reinforcement WC particulate percentage from 15 wt% to 60 wt%. It is about 470% surface hardness...

... their deposition. The XRD spectra revealed that matrix and reinforcements are dominant phases in the clad layer. The formation of compounds reflected considerably a lower dilution of reinforcement phase with Ti6Al4V matrix during melting and deposition. Higher the microhardness of the (Al 2 O 3 + TiN)/Ti6Al4V clad...

... 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...

... C 4 , Cr 7 Ni 3 , NiC, NiW, W 2 C, Fe 6 W 6 C, Fe 7 C 3 , FeNi 3 during microwave heating. The hard phases present in the clad region contributed to the enhancement in the microhardness. The mean microhardness of the clad region was observed as 550 ± 40 HV. Further, composite clad exhibited...

... and wear properties of ZrB 2 -containing composite coating sliding against a GCr15 steel ball at different normal loads and sliding speeds were evaluated. The morphologies of the worn surfaces were analyzed by means of SEM and three dimensional noncontact surface mapping. It is shown that the microhardness...

... 2010 cements (building materials) centrifugal casting kilns microhardness particle reinforced composites resins scanning electron microscopy Taguchi methods wear resistance cement kiln dust friction and wear functionally graded composites Functionally graded materials...

... ∕ s , and pressures ranging from 10 N to 40 N ). An additional focus is on scuffling resistance of faces in friction, microhardness and surface roughness of coated items, and the competitive advantage of using advanced surface coatings. Literature ( 1 2 3 4 5 ) suggests that the electrospark...

... with oxidation or hot corrosion resistance, is required. In the present work, NiCrAlY and Ni - 20 Cr metallic coatings were deposited on an iron-based superalloy by a shrouded plasma spray process. The coatings were characterized by scanning electron microscopy, optical microscopy, microhardness testing, and x...

...). 24 November 2003 11 March 2004 09 11 2004 copper metallic thin films indentation internal stresses plastic flow microhardness digital simulation finite element analysis Nanoindentatoin Finite Element Methods Nanohardness It is known that the mechanical...

... controlled fretting-only experiments. In particular, the effect of slip displacement amplitude and number of fretting cycles on the evolution of grain morphology, grain orientation, misorientation distribution, composition, and microhardness is investigated using electron backscatter diffraction (EBSD...

... structure indentation microhardness wear resistance steel 30 January 2002 23 July 2002 19 03 2003 Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY . Manuscript received by the Tribology Division January 30, 2002; revised manuscript received...