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Journal ArticleDOI

Improving Erosion Resistance of Hydroturbine Steel Using Friction Stir Processing

01 Oct 2014-Journal of Tribology-transactions of The Asme (American Society of Mechanical Engineers)-Vol. 136, Iss: 4, pp 041102
About: This article is published in Journal of Tribology-transactions of The Asme.The article was published on 2014-10-01. It has received 18 citations till now. The article focuses on the topics: Friction stir processing.
Citations
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Journal ArticleDOI
TL;DR: A comprehensive review of the latest developments of FSP in hybrid surface composites manufacturing can be found in this article, where the effects of single-pass, multipass, and change in pass direction on microstructure and resultant properties are summarized.
Abstract: The metal matrix composites combine the metallic properties of a tough and ductile matrix with properties of reinforcement particles, simultaneously develop the functional properties by proper selection of reinforcements for projected applications. However, hard ceramics reinforcements decrease toughness and ductility of soft matrix and restrict their wide applications. The surface metal matrix composites (SMMCs) preserve the matrix properties with added advanced surface properties by reinforcing particles only in the surface layer. The hybrid surface metal matrix composites (HSMMCs) with more than one reinforcement gained attention in material processing due to their noble tribological behavior and surface properties, which cannot be attained in mono composites. Conventional liquid-phase processing techniques to fabricate hybrid surface composites result in the formation of undesirable brittle compounds, detrimental to desirable properties of composites. Friction stir processing (FSP), a solid-state processing technique, has been used by many investigators using different reinforcements to fabricate mono as well as hybrid surface composites. Friction stir processed (FSPed) hybrid surface composites have not been extensively reviewed. The current review provides a comprehensive understanding of the latest developments of FSP in hybrid surface composites manufacturing. This paper review different reinforcement strategies in the fabrication of FSPed hybrid surface composites and also the effects of single-pass, multipass, and change in pass direction on microstructure and resultant properties. Finally, future directions and challenges to FSPed hybrid surface composites are summarized. This review article containing important information on hybrid surface composites fabrication by FSP will be useful to academicians and investigators in the field.

33 citations

Journal ArticleDOI
TL;DR: In this paper, the authors studied the slurry erosion resistance of 13Cr4Ni stainless steel after thermo-mechanical processing using Gleeble® 3800 simulator.

30 citations

Journal ArticleDOI
TL;DR: In this article, WC-10Co-4Cr coating was applied to the surface of F6NM stainless steel by high-velocity oxygen-fuel spraying and the slurry erosion behavior of the matrix and coating was examined at different rotational speeds using a self-made machine.
Abstract: WC-10Co-4Cr coating was applied to the surface of F6NM stainless steel by high-velocity oxygen-fuel spraying. The slurry erosion behavior of the matrix and coating was examined at different rotational speeds using a self-made machine. This experiment effectively simulates real slurry erosion in an environment with high silt load. At low velocity (<6 m/s), the main failure mechanism was cavitation. Small bubbles acted as an air cushion, obstructing direct contact between sand and the matrix surface. However, at velocity above 9 m/s, abrasive wear was the dominant failure mechanism. The results indicate that WC-10Co-4Cr coating significantly improved the slurry resistance at higher velocity, because it created a thin and dense WC coating on the surface.

30 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigated the cavitation erosion-corrosion behavior of two newly developed Fe-10Cr martensitic steels in 3.5 % NaCl solution compared with 304 stainless steel.

26 citations

Journal ArticleDOI
TL;DR: In this article, a copper-based surface composite was fabricated through dispersing hybrid composite particles onto its surface through friction stir processing (FSP) technique, and the composite particles were then used for fabrication.
Abstract: In this research, a copper based surface composite was fabricated through dispersing hybrid composite particles onto its surface through friction stir processing (FSP) technique. Optical micrograph...

20 citations

References
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Book
30 Mar 2007
TL;DR: Friction stir welding (FSW) is a relatively new solid-state joining process that is used to join high-strength aerospace aluminum alloys and other metallic alloys that are hard to weld by conventional fusion welding as discussed by the authors.
Abstract: Friction stir welding (FSW) is a relatively new solid-state joining process. This joining technique is energy efficient, environment friendly, and versatile. In particular, it can be used to join high-strength aerospace aluminum alloys and other metallic alloys that are hard to weld by conventional fusion welding. FSW is considered to be the most significant development in metal joining in a decade. Recently, friction stir processing (FSP) was developed for microstructural modification of metallic materials. In this review article, the current state of understanding and development of the FSW and FSP are addressed. Particular emphasis has been given to: (a) mechanisms responsible for the formation of welds and microstructural refinement, and (b) effects of FSW/FSP parameters on resultant microstructure and final mechanical properties. While the bulk of the information is related to aluminum alloys, important results are now available for other metals and alloys. At this stage, the technology diffusion has significantly outpaced the fundamental understanding of microstructural evolution and microstructure–property relationships.

4,750 citations

Book
01 Jan 1992
TL;DR: In this paper, surface topography and surfaces in contact are discussed, as well as surface engineering in tribology, materials for bearings and sliding wear by hard particles, friction and friction.
Abstract: Preface * Introduction * Surface topography and surfaces in contact * Friction * Lubricants and lubrication * Sliding wear * Wear by hard particles * Wear and design * Surface engineering in tribology * Materials for bearings * Author index * Subject index.

2,647 citations

Journal ArticleDOI
Iain Finnie1
01 Mar 1960-Wear
TL;DR: In this paper, the authors discussed some aspects of the fluid flow conditions which may lead to erosion and then analyzed the mechanism of material removal for ductile and brittle materials for both types of materials.

1,398 citations

Journal ArticleDOI
TL;DR: In this article, a comprehensive computational study was undertaken to identify the extent to which elasto-plastic properties of ductile materials could be determined from instrumented sharp indentation and to quantify the sensitivity of such extracted properties to variations in the measured indentation data.

1,299 citations

Journal ArticleDOI
TL;DR: Friction stir welding (FSW) is an emerging metalworking technique that can provide localized modification and control of microstructures in near-surface layers of processed metallic components.
Abstract: Friction stir processing (FSP), developed based on the basic principles of friction stir welding (FSW), a solid-state joining process originally developed for aluminum alloys, is an emerging metalworking technique that can provide localized modification and control of microstructures in near-surface layers of processed metallic components. The FSP causes intense plastic deformation, material mixing, and thermal exposure, resulting in significant microstructural refinement, densification, and homogeneity of the processed zone. The FSP technique has been successfully used for producing the fine-grained structure and surface composite, modifying the microstructure of materials, and synthesizing the composite and intermetallic compound in situ. In this review article, the current state of the understanding and development of FSP is addressed.

955 citations