...Anup Kulkarni; Vivek C. Peddiraju; Subhradeep Chatterjee; Dheepa Srinivasan The current work presents an understanding of microstructure and mechanical properties as a function of build geometry and build orientation in Cu-Cr-Zr via the laser powder bed fusion (LPBF) technique. Porosity...

...Shreehard Sahu; Bikash Kumar; Siba Sundar Sahoo; Balila Nagamani Jaya; Dheepa Srinivasan The Co-based superalloy Mar M 509, known for its high-temperature oxidation and hot corrosion resistance, is processed via laser powder bed fusion (LPBF). Microstructure and mechanical properties of Mar M 509...

... Ti64 alloy and ASS 304 steel, vacuum diffusion bonding (VDB) method is employed with thin copper (Cu) foil as an interlayer. The DB pressure extends significant influence on microstructural evolution and strength of joints. So, for the feasibility of joining Ti64 alloy and ASS 304 steel, the effect...

... microscopy is employed for observing the microstructures of specimens. The results indicate that the hat-shaped specimen S1 is difficult to form voids and dimples. Moreover, as far as the hat-shaped specimen S2 is concerned, the number of voids reduces with the rising shear strain rate, and no voids appear...

... during post-processing had a significant influence on the microstructure and subsequently the mechanical properties of the lattices. Oxygen content analysis was conducted to confirm the oxygen diffusion through the strurts’ peripheries. The effect of oxygen diffusion during the HIPing and sub-transus HT...

...Sinem Aktaş; Ege Anıl Diler Nano-aluminum powders and nano-ZrO 2 reinforcement particles were mechanically milled and hot-pressed to produce Al–ZrO 2 nanocomposites. Microstructure and mechanical properties of Al–ZrO 2 nanocomposites were investigated using scanning electron microscope (SEM...

... and T echnology . 29 10 2020 04 02 2021 04 02 2021 04 03 2021 reversed austenite JMAK model phase-field model microstructure finite element analysis stainless steels Steels are widely used in the automotive industry. The main reason for its use is the range...

...Donghui Wang; Shaogang Wang; Wen Zhang The dissimilar titanium alloys Ti70/TA5 are welded by using electron beam welding. The microstructure and mechanical properties of the welded joints are systematically investigated, and the welding parameters are optimized. Results show that the fusion zone...

... be overcome with a higher fidelity ductile fracture model that is microstructurally informed. Fig. 8 ( a ) Simulations of effective plastic strain for tensile specimens with different starting porosity percentage ( f i ). ( b ) Experimental engineering stress–strain plots for f i = 1% and 5...

... Transformation Kinetics ,” Sci. Technol. Weld. Joining , 18 ( 3 ), pp. 247 – 252 . 10.1179/1362171812Y.0000000100 [28] Hanhold , B. , Babu , S. S. , and Cola , G. , 2013 , “ Investigation of Heat Affected Zone Softening in Armour Steels Part 2—Mechanical and Microstructure Heterogeneity...

...Shih-Ying Chang; An-Bang Wu; Jun-Yen Lee; Yan-Hua Huang The microstructure, thermal behavior, and mechanical properties of Sn-xZn-0.1RE (x = 5, 10, 20, and 30 wt%) alloys containing mixed trace rare earth elements were investigated in this study. The results showed that the alloys had the same...

... September 8, 2017; final manuscript received May 9, 2018; published online February 13, 2019. Assoc. Editor: Khaled Morsi. 08 09 2017 09 05 2018 nickel-based alloys welding rapid cooling microstructure hot cracking susceptibility Nickel-based alloys have excellent high...

...: equal channel angular pressing (ECAP) under quasi-static loading and impact under dynamic loading, using Taylor's test setup. In addition to the mechanical properties, the microstructure evolution of the material is investigated. Half of the samples are aged at 400 °C for 2 h, to remove internal stress...

... only constitute a small percentage of the total life in this material, and the long crack growth regime is insensitive to microstructural influences. Finally, the MSC/PSC crack growth laws have been shown to be valid on cracks up to several millimeters in length, which is consistent with the usage...

... direction is orthogonal to c-axis of hexagonal close packed (HCP) lattice. Microstructural analysis shows that the former one has heterogeneous grain structure owing to grain-boundary-related recrystallization, and by contrast the later one has a more uniform microstructure for the twin-related...

... followed by hot extrusion. The simultaneous addition of nano-Al 2 O 3 and copper particulates led to an overall improvement in both microstructural characteristics in terms of distribution and morphology of secondary phases and mechanical response of AZ61. The presence of nanoalumina particulates broke...

... propagation in polycrystalline tungsten microstructures. The results show a significant effect of GB property variation on change of crack propagation patterns during tungsten fracture. A variation of 10% in GB fracture energy resulted in distinctly different crack patterns with different primary crack...

...Venkateswaran Perumal; Sivakumar Palanivelu; Siba Prasad Mookherjee; Ajit Kumar Jindal The present paper investigates the microstructure and mechanical properties’ aspects of AISI 4140 steel front axle beams developed by roll and hot-die forging processes. Microstructure of the processed beams...

...G. C. Saha; T. I. Khan High velocity oxy-fuel spraying was used to develop a near-nanocrystalline coating from a duplex Co coated WC-17Co powder feedstock. A microstructural and mechanical property characterization of the coating with a similar microcrystalline coating of the same composition...

...) are performed on the finite element meshes developed on experimentally processed SiC morphologies. Analyses were performed at two different length scales: 300 μm × 60 μm (scale-1:Microscale) and 75 μm × 15 μm (scale-2:Mesoscale). Lower resolution microstructure at scale-1 does not explicitly consider...