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Journal ArticleDOI

Atom probe tomographic study of a friction-stir-processed Al–Mg–Sc alloy

01 Dec 2012-Acta Materialia (Pergamon)-Vol. 60, Iss: 20, pp 7078-7089
TL;DR: The microstructure of a twin-roll-cast Al-4.5Mg-0.28Sc at.% alloy after friction-stir processing, performed at two tool rotational rates, was investigated by atom probe tomography as discussed by the authors.
About: This article is published in Acta Materialia.The article was published on 2012-12-01. It has received 51 citations till now. The article focuses on the topics: Grain boundary.
Citations
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Journal ArticleDOI
TL;DR: In this paper, a series of high-strength Al alloys for selective laser melting (SLM) additive manufacturing were designed and additively manufactured using atomized alloy powders.

281 citations

Journal ArticleDOI
TL;DR: In this paper, gas-atomized powders of two ternary alloys, Al-3.60Mg-1.18Zr and Al 3.57Zr, were densified via laser powder bed fusion.

276 citations

Journal ArticleDOI
TL;DR: In this article, a high strength in-process and post-process friendly Al alloy was developed for the selective laser melting (SLM) process, one of the most commonly used additive manufacturing techniques.

265 citations

Journal ArticleDOI
TL;DR: In this paper, a cost-effective aluminum alloys for high-temperature applications, using micro-hardness, electrical conductivity and atom-probe tomography measurements, were studied.

196 citations

Journal ArticleDOI
TL;DR: In this paper, an overview of the microstructure and the evolution of particle size and morphology as a function of mechano-thermal processing is investigated, with an emphasis on the Al3(Sc,Zr)-based precipitates.

127 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 1976
TL;DR: In this article, the authors present an overview of fracture mechanics of engineering materials and examine the role of the transition temperature approach to fracture control in the engineering failure process, as well as various aspects of fracture toughness.
Abstract: DEFORMATION OF ENGINEERING MATERIALS. Tensile Response of Materials. Elements of Dislocation Theory. Slip and Twinning in Crystalline Solids. Strengthening Mechanisms in Metals. High-Temperature Deformation Response of Crystalline Solids. Deformation Response of Engineering Plastics. FRACTURE MECHANICS OF ENGINEERING MATERIALS. Fracture: An Overview. Elements of Fracture Mechanics. Transition Temperature Approach to Fracture Control. Microstructural Aspects of Fracture Toughness. Environment-Assisted Cracking. Cyclic Stress and Strain Fatigue. Fatigue Crack Propagation. Analyses of Engineering Failures. Appendices. Indexes.

3,611 citations

Book
05 Oct 2000
TL;DR: Hardness measurements with conical and pyramidal indenters as mentioned in this paper have been used to measure the area of contact between solids and the hardness of ideal plastic metals. But they have not yet been applied to the case of spherical indenters.
Abstract: 1. Introduction 2. Hardness measurements by spherical indenters 3. Deformation and indentation of ideal plastic metals 4. Deformation of metals by spherical indenters. Ideal plastic metals 5. Deformation of metals by spherical indenters. Metals which work-harden 6. Deformation of metals by spherical indenters. 'Shallowing' and elastic 'recovery' 7. Hardness measurements with conical and pyramidal indenters 8. Dynamic or rebound hardness 9. Area of contact between solids Appendix I. Brinell hardness Appendix II. Meyer hardness Appendix III. Vickers hardness Appendix IV. Hardness conversion Appendix V. Hardness and ultimate tensile strength Appendix VI. Some typical hardness values

3,562 citations