Institution
Warsaw University of Technology
Education•Warsaw, Poland•
About: Warsaw University of Technology is a education organization based out in Warsaw, Poland. It is known for research contribution in the topics: Microstructure & Optical fiber. The organization has 14293 authors who have published 34362 publications receiving 492211 citations. The organization is also known as: Warsaw Polytechnic & Politechnika Warszawska.
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20 Nov 2016-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: The mechanical properties and corrosion resistance of 316-L stainless steel fabricated using the Laser Engineered Net Shaping (LENS) technique have been studied in this paper, and the results prove that the microstructure of the SS316L fabricated using LENS is heterogeneous; its impact on the mechanical properties is visible.
Abstract: The mechanical properties and corrosion resistance of 316 L stainless steel fabricated using the Laser Engineered Net Shaping (LENS) technique have been studied. The crack-free, full density samples made using SS316L alloy powder and the LENS technique are characterized by an unusual distinct dual-phase microstructure. STEM analysis revealed a significant increase of Cr and Mo content and a decrease of Ni in the grain boundaries. Based on the Cr and Ni content (austenite stabilizing elements), the Schaeffler diagram and the EBSD results, the existence of intercellular delta ferrite on subgrain boundaries and austenite in the fine-grains are observed. The XRD patterns, in addition to the FCC austenite phase, revealed the second BCC ferrite phase. Moreover, the sigma (FeCr) phases are present in the analyzed 316 L stainless steel. The occurrence of ferrite, which does not occur in regular stainless steel fabricated using conventional metallurgical methods, improves the mechanical and corrosion properties of the LENS-fabricated sample made using 316 L stainless steel powder. The obtained results prove that the microstructure of the SS316L fabricated using LENS is heterogeneous; its impact on the mechanical properties is visible. The analyzed samples are characterized by anisotropic mechanical properties that are favorable. For both the perpendicular and parallel directions of tensile tests, samples had a ductile fracture with many dimples inside of the larger dimples. The corrosion potential of SS316L LENS and classically manufactured steel is similar. The SS316L fabricated using LENS is characterized by a relatively low value of corrosion current density, which translates into much smaller corrosion rates.
324 citations
TL;DR: In this paper, a theoretical analysis indicates that the structural stability of the droplet and the hydrodynamic effects during the drying process play important roles in controlling the morphology of the resulting particles.
317 citations
TL;DR: In this article, the authors present an overview of past, present and future emissions from land transport, of their impacts on the atmospheric composition and air quality, on human health and climate change and on options for mitigation.
315 citations
Baylor College of Medicine1, Howard Hughes Medical Institute2, Warsaw University of Technology3, University of Washington4, Boston Children's Hospital5, Human Genome Sequencing Center6, Columbia University7, Istanbul University8, Boğaziçi University9, Loma Linda University Medical Center10, University of California, San Francisco11, University of Texas Health Science Center at Houston12
TL;DR: A mosaic genetic screen of lethal mutations on the Drosophila X chromosome is conducted to identify genes required for the development, function, and maintenance of the nervous system and to provide insights into microcephaly associated with brain dysgenesis.
315 citations
TL;DR: Measurements indicate that CVD grown graphene is under less compressive strain than its epitaxial counterpart and confirms the existence of an electronic energy band gap, which are essential for future applications of graphene electronics based on wafer scale graphene growth.
Abstract: We demonstrate the growth of high quality graphene layers by chemical vapor deposition (CVD) on insulating and conductive SiC substrates. This method provides key advantages over the well-developed...
314 citations
Authors
Showing all 14420 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Stefano Colafranceschi | 129 | 1103 | 79174 |
| Dezso Horvath | 128 | 1283 | 88111 |
| Valentina Dutta | 125 | 1179 | 76231 |
| Viktor Matveev | 123 | 1212 | 73939 |
| Anna Zanetti | 120 | 1488 | 71375 |
| Harold A. Scheraga | 120 | 1152 | 66461 |
| J. Pluta | 120 | 659 | 52025 |
| Adam Ryszard Kisiel | 118 | 691 | 50546 |
| Terence G. Langdon | 117 | 1158 | 61603 |
| Andrei Starodumov | 114 | 697 | 57900 |
| T. Pawlak | 111 | 379 | 42455 |
| John D. Pickard | 107 | 628 | 42479 |
| W. Peryt | 107 | 376 | 40524 |
| William G. Stevenson | 101 | 585 | 57798 |
| Anil Kumar | 99 | 2124 | 64825 |