Browsing NTNU Open by Author "Konda Gokuldoss, Prashanth"
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Additive Manufacturing Processes: Selective Laser Melting, Electron Beam Melting and Binder Jetting—Selection Guidelines
Konda Gokuldoss, Prashanth; Kolla, Sri Sudha Vijay Keshav; Eckert, Jürgen (Journal article; Peer reviewed, 2017)Additive manufacturing (AM), also known as 3D printing or rapid prototyping, is gaining increasing attention due to its ability to produce parts with added functionality and increased complexities in geometrical design, ... -
Anisotropy in local microstructure – Does it affect the tensile properties of the SLM samples?
Maity, Tapabrata; Chawake, Niraj; Kim, JT; Eckert, Jürgen; Konda Gokuldoss, Prashanth (Journal article; Peer reviewed, 2018)Al-12Si samples were fabricated using selective laser melting, which shows the presence of a cellular microstructure with Al along the core of the cells and Si along cell boundaries. The microstructure is anisotropic with ... -
Characterization of Al/crystallized Al-based metallic glass composites produced by repeated roll bonding process
Alizadeh, Morteza; Khoramkhorshid, Saba; Taghvaei, Amir Hossein; Konda Gokuldoss, Prashanth (Journal article; Peer reviewed, 2017)Devitrified Al84Gd6Ni7Co3 glassy particles have been used to reinforce Al-matrix composites through repeated roll bonding (RRB) process. Microstructural characterization of the produced composites after various rolling ... -
Effect of Al2O3 Nanoparticles as Reinforcement on the Tensile Behavior of Al-12Si Composites
Ma, Pan; Jia, Yandong; Konda Gokuldoss, Prashanth; Yu, Zhishui; Yang, Shanglei; Zhao, Jian; Li, Chonggui (Journal article; Peer reviewed, 2017)Al2O3 nanoparticle-reinforced Al-12Si matrix composites were successfully fabricated by hot pressing and subsequent hot extrusion. The influence of weight fraction of Al2O3 particles on the microstructure, mechanical ... -
Effect of Si content on the microstructure and properties of Al–Si alloys fabricated using hot extrusion
Ma, Pan; Jia, Yandong; Konda Gokuldoss, Prashanth; Yu, Zhishui; Li, Chonggui; Zhao, Jian; Yang, Shanglei; Huang, Lixin (Journal article; Peer reviewed, 2017)Al–(12, 20, 35 wt%)Si alloys were fabricated using powder metallurgy process involving hot pressing followed by hot extrusion. The effect of Si content on the microstructure [by scanning electron microscopy], the mechanical ... -
Friction welding of selective laser melted Ti6Al4V parts
Konda Gokuldoss, Prashanth (Journal article; Peer reviewed, 2017)Ti6Al4V alloy samples fabricated by selective laser melting (SLM) were subjected to solid-state welding friction welding (FW). The welded alloy exhibits a α´-martensitic microstructure in the form of platelets with dimensions ... -
High strength nanostructured Al-based alloys through optimized processing of rapidly quenched amorphous precursors
Kim, Song-Yi; Lee, Gwang-Yeob; Park, Gyu-Hyeon; Kim, Hyeon-Ah; Lee, A-Young; Scudino, Sergio; Konda Gokuldoss, Prashanth; Kim, Do-Hyang; Eckert, Jürgen; Lee, Min-Ha (Journal article; Peer reviewed, 2018)We report the methods increasing both strength and ductility of aluminum alloys transformed from amorphous precursor. The mechanical properties of bulk samples produced by spark-plasma sintering (SPS) of amorphous Al-Ni-Co-Dy ... -
Influence of Nb on the Microstructure and Fracture Toughness of (Zr0.76Fe0.24)100−xNbx Nano-Eutectic Composites
Maity, Tapabrata; Dutta, Anushree; Jana, Parijat Pallab; Konda Gokuldoss, Prashanth; Eckert, Jürgen; Das, Jayanta (Journal article; Peer reviewed, 2018)The present study demonstrates the evolution of eutectic microstructure in arc-melted (Zr0.76Fe0.24)100−xNbx (0 ≤ x ≤ 10 atom %) composites containing α-Zr//FeZr2 nano-lamellae phases along with pro-eutectic Zr-rich ... -
Influence of Powder Characteristics on Processability of AlSi12 Alloy Fabricated by Selective Laser Melting
Baitimerov, Rustam; Lykov, Pavel; Zherebtsov, Dmitry; Radionova, Ludmila; Konda Gokuldoss, Prashanth; Shultc, Alexey (Journal article; Peer reviewed, 2018)Selective laser melting (SLM) is one of the additive manufacturing technologies that allows for the production of parts with complex shapes from either powder feedstock or from wires. Aluminum alloys have a great potential ... -
Mechanical and Tribological Properties of Al2O3-TiC Composite Fabricated by Spark Plasma Sintering Process with Metallic (Ni, Nb) Binders
Kumar, Rohit; Chaubey, Anil Kumar; Maity, Tapabrata; Konda Gokuldoss, Prashanth (Journal article; Peer reviewed, 2018)Al2O3-10TiC composites were fabricated through the powder metallurgical process (mechanical milling combined with spark plasma sintering) with the addition of Ni/Nb as metallic binders. The effect of binder addition (Ni/Nb) ... -
Mechanical behavior of selective laser melted 316L stainless steel
Suryawanshi, Jyoti; Konda Gokuldoss, Prashanth; Ramamurty, U (Journal article; Peer reviewed, 2017)The tensile, fracture, and fatigue crack growth properties of 316L stainless steel (SS) produced using the selective laser melting (SLM) technique were evaluated and compared with those of conventionally manufactured (CM) ... -
Microstructure and mechanical properties of Al-Cu alloys fabricated by selective laser melting of powder mixtures
Wang, Pei; Deng, L.; Konda Gokuldoss, Prashanth; Pauly, Simon; Eckert, Jürgen; Scudino, Sergio (Journal article; Peer reviewed, 2018)Selective laser melting was used to in-situ fabricate Al-xCu (x = 4.5, 6, 20, 33 and 40 wt%) samples from mixtures of Al-4.5Cu/Cu powders. The insufficient Cu solute diffusion during the layer-by-layer processing results ... -
Microstructure and strength of nano-/ultrafine-grained carbon nanotube-reinforced titanium composites processed by high-pressure torsion
Li, F.X.; Hao, P.D.; Yi, J.H.; Chen, Z.; Konda Gokuldoss, Prashanth; Maity, Tapabrata; Eckert, Jürgen (Journal article; Peer reviewed, 2018)Nano-/ultrafine-grained carbon nanotube-reinforced titanium (CNT/Ti) composites were synthesized by ball milling and high pressure torsion (HPT) at room temperature. The effects of the number of HTP rotations and the weight ... -
Microstructure evolution and mechanical properties of carbon nanotubes reinforced Al matrix composites
Liu, Xiaoqing; Li, Caiju; Eckert, Jürgen; Konda Gokuldoss, Prashanth; Renk, Oliver; Teng, Long; Liu, Yichun; Bao, Rui; Tao, Jingmei; Tao, Shen; Yi, Jianhong (Journal article; Peer reviewed, 2017)Carbon nanotubes reinforced pure aluminum (CNT/Al) composites were fabricated by combined ball milling and powder metallurgy (PM) techniques. The distribution of CNTs, the evolution of the average Al grain size of the ... -
Reciprocating sliding wear behavior of high-strength nanocrystalline Al84Ni7Gd6Co3 alloys
Wang, Zhi; Georgarakis, Kostas; Zhang, W. W; Konda Gokuldoss, Prashanth; Eckert, Jürgen; Scudino, Sergio (Journal article; Peer reviewed, 2017)Nanocrystalline Al-Ni-Gd-Co alloys with exceptionally high hardness have been recently developed from amorphous precursors. In the present work, the reciprocating sliding wear in the gross slip regime of these novel ...