Imperial College London

DrFinnGiuliani

Faculty of EngineeringDepartment of Materials

Reader in Structural Ceramics
 
 
 
//

Contact

 

+44 (0)20 7594 1249f.giuliani

 
 
//

Location

 

RSM LM04DRoyal School of MinesSouth Kensington Campus

//

Summary

 

Publications

Publication Type
Year
to

82 results found

Wang S, Giuliani F, Britton TB, 2019, Microstructure and formation mechanisms of δ-hydrides in variable grain size Zircaloy-4 studied by electron backscatter diffraction, Acta Materialia, Vol: 169, Pages: 76-87, ISSN: 1359-6454

© 2019 Acta Materialia Inc. Microstructure and crystallography of δ phase hydrides in as-received fine grain and ‘blocky alpha’ large grain Zircaloy-4 (average grain size ∼11 μm and >200 μm, respectively) were examined using electron backscatter diffraction (EBSD). Results suggest that the matrix-hydride orientation relationship is {0001} α ||{111} δ ;<112¯0> α ||<110> δ for all the cases studied. The habit plane of intragranular hydrides and some intergranular hydrides has been found to be {101¯7} of the surrounding matrix. The morphology of intergranular hydrides can vary depending upon the angle between the grain boundary and the hydride habit plane. The misfit strain between α-Zr and δ-hydride is accommodated mainly by high density of dislocations and twin structures in the hydrides, and a mechanism of twin formation in the hydrides has been proposed. The growth of hydrides across grain boundaries is achieved through an auto-catalytic manner similar to the growth pattern of intragranular hydrides. Easy collective shear along <11¯00> makes it possible for hydride nucleation at any grain boundaries, while the process seems to favour grain boundaries with low (<40°) and high (>80°) c-axis misorientation angles. Moreover, the angle between the grain boundary and the adjacent basal planes does not influence the propensity for hydride nucleation.

JOURNAL ARTICLE

Wang S, Giuliani F, Ben Britton T, 2019, Variable temperature micropillar compression to reveal < a > basal slip properties of Zircaloy-4, SCRIPTA MATERIALIA, Vol: 162, Pages: 451-455, ISSN: 1359-6462

JOURNAL ARTICLE

Jun T-S, Maeder X, Bhowmik A, Guillonneau G, Michler J, Giuliani F, Ben Britton Tet al., 2019, The role of beta-titanium ligaments in the deformation of dual phase titanium alloys, MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, Vol: 746, Pages: 394-405, ISSN: 0921-5093

JOURNAL ARTICLE

Boughton OR, Ma S, Zhao S, Arnold M, Lewis A, Hansen U, Cobb JP, Giuliani F, Abel RLet al., 2018, Measuring bone stiffness using spherical indentation, PLOS ONE, Vol: 13, ISSN: 1932-6203

JOURNAL ARTICLE

Pelissari PIBGB, Bouville F, Pandolfelli VC, Carnelli D, Giuliani F, Luz AP, Saiz E, Studart ARet al., 2018, Nacre-like ceramic refractories for high temperature applications, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 38, Pages: 2186-2193, ISSN: 0955-2219

JOURNAL ARTICLE

Knowles AJ, Jun T-S, Bhowmik A, Jones NG, Ben Britton T, Giuliani F, Stone HJ, Dye Det al., 2018, Data on a new beta titanium alloy system reinforced with superlattice intermetallic precipitates, DATA IN BRIEF, Vol: 17, Pages: 863-869, ISSN: 2352-3409

JOURNAL ARTICLE

Bhowmik A, Lee J, Ben Britton T, Liu W, Jun T-S, Sernicola G, Karimpour M, Balint DS, Giuliani Fet al., 2018, Deformation behaviour of [001] oriented MgO using combined in-situ nano-indentation and micro-Laue diffraction, ACTA MATERIALIA, Vol: 145, Pages: 516-531, ISSN: 1359-6454

JOURNAL ARTICLE

Waheed S, Hao R, Zheng Z, Wheeler JM, Michler J, Balint DS, Giuliani Fet al., 2018, Temperature-dependent plastic hysteresis in highly confined polycrystalline Nb films, MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, Vol: 26, ISSN: 0965-0393

JOURNAL ARTICLE

Knowles AJ, Bhowmik A, Purkayastha S, Jones NG, Giuliani F, Clegg WJ, Dye D, Stone HJet al., 2017, Laves phase intermetallic matrix composite in situ toughened by ductile precipitates, SCRIPTA MATERIALIA, Vol: 140, Pages: 59-62, ISSN: 1359-6462

JOURNAL ARTICLE

Knowles AJ, Jun T-S, Bhowmik A, Jones NG, Britton TB, Giuliani F, Stone HJ, Dye Det al., 2017, A new beta titanium alloy system reinforced with superlattice intermetallic precipitates, SCRIPTA MATERIALIA, Vol: 140, Pages: 71-75, ISSN: 1359-6462

JOURNAL ARTICLE

Feilden E, Ferraro C, Zhang Q, Garcia-Tunon E, D'Elia E, Giuliani F, Vandeperre L, Saiz Eet al., 2017, 3D Printing Bioinspired Ceramic Composites, SCIENTIFIC REPORTS, Vol: 7, ISSN: 2045-2322

JOURNAL ARTICLE

Knowles AJ, Bhowmik A, Purkayastha S, Jones NG, Giuliani F, Clegg WJ, Dye D, Stone HJet al., 2017, Data on a Laves phase intermetallic matrix composite in situ toughened by ductile precipitates, DATA IN BRIEF, Vol: 14, Pages: 489-493, ISSN: 2352-3409

JOURNAL ARTICLE

Arnold M, Zhao S, Ma S, Giuliani F, Hansen U, Cobb JP, Abel RL, Boughton Oet al., 2017, Microindentation - a tool for measuring cortical bone stiffness?, BONE & JOINT RESEARCH, Vol: 6, Pages: 542-549, ISSN: 2046-3758

JOURNAL ARTICLE

Arnold M, Zhao S, Ma S, Giuliani F, Hansen U, Cobb JP, Abel RL, Boughton Oet al., 2017, Microindentation - a tool for measuring cortical bone stiffness? A systematic review., Bone Joint Res, Vol: 6, Pages: 542-549, ISSN: 2046-3758

OBJECTIVES: Microindentation has the potential to measure the stiffness of an individual patient's bone. Bone stiffness plays a crucial role in the press-fit stability of orthopaedic implants. Arming surgeons with accurate bone stiffness information may reduce surgical complications including periprosthetic fractures. The question addressed with this systematic review is whether microindentation can accurately measure cortical bone stiffness. METHODS: A systematic review of all English language articles using a keyword search was undertaken using Medline, Embase, PubMed, Scopus and Cochrane databases. Studies that only used nanoindentation, cancellous bone or animal tissue were excluded. RESULTS: A total of 1094 abstracts were retrieved and 32 papers were included in the analysis, 20 of which used reference point indentation, and 12 of which used traditional depth-sensing indentation. There are several factors that must be considered when using microindentation, such as tip size, depth and method of analysis. Only two studies validated microindentation against traditional mechanical testing techniques. Both studies used reference point indentation (RPI), with one showing that RPI parameters correlate well with mechanical testing, but the other suggested that they do not. CONCLUSION: Microindentation has been used in various studies to assess bone stiffness, but only two studies with conflicting results compared microindentation with traditional mechanical testing techniques. Further research, including more studies comparing microindentation with other mechanical testing methods, is needed before microindentation can be used reliably to calculate cortical bone stiffness.Cite this article: M. Arnold, S. Zhao, S. Ma, F. Giuliani, U. Hansen, J. P. Cobb, R. L. Abel, O. Boughton. Microindentation - a tool for measuring cortical bone stiffness? A systematic review. Bone Joint Res 2017;6:542-549. DOI: 10.1302/2046-3758.69.BJR-2016-0317.R2.

JOURNAL ARTICLE

Sernicola G, Giovannini T, Patel P, Kermode JR, Balint DS, Ben Britton T, Giuliani Fet al., 2017, In situ stable crack growth at the micron scale, NATURE COMMUNICATIONS, Vol: 8, ISSN: 2041-1723

JOURNAL ARTICLE

Waheed S, Hao R, Bhowmik A, Balint DS, Giuliani Fet al., 2017, A unifying scaling for the Bauschinger effect in highly confined thin films: a discrete dislocation plasticity study, MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, Vol: 25, ISSN: 0965-0393

JOURNAL ARTICLE

Rounthwaite NJ, Williams R, McGivery C, Jiang J, Giulliani F, Britton Bet al., 2017, A Chemical and Morphological Study of Diesel Injector Nozzle Deposits - Insights into their Formation and Growth Mechanisms, Publisher: SAE INT, Pages: 106-114, ISSN: 1946-3952

CONFERENCE PAPER

Feilden E, Giovannini T, Ni N, Ferraro C, Saiz E, Vandeperre L, Giuliani Fet al., 2017, Micromechanical strength of individual Al2O3 platelets, SCRIPTA MATERIALIA, Vol: 131, Pages: 55-58, ISSN: 1359-6462

JOURNAL ARTICLE

Glymond D, Vick MJ, Giuliani F, Vandeperre LJet al., 2017, High-temperature fracture toughness of mullite with monoclinic zirconia, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, Vol: 100, Pages: 1570-1577, ISSN: 0002-7820

JOURNAL ARTICLE

Boughton OR, Zhao S, Arnold M, Ma S, Cobb JP, Giuliani F, Hansen U, Abel RLet al., 2017, Measuring bone stiffness using microindentation, British Orthopaedic Research Society (BORS) 2016 Conference, Publisher: British Editorial Society of Bone and Joint Surgery, Pages: 31-31, ISSN: 2049-4416

CONFERENCE PAPER

Feilden E, Giovannini T, Ni N, Ferraro C, Saiz E, Vandeperre L, Giuliani Fet al., Micromechanical strength of Al2O3 platelets, Scripta Materialia, ISSN: 1359-6462

Optimising the properties of platelet reinforced composites requires the strength of the reinforcing phase to be known, however strength measurements at such small scales are difficult and therefore data is sparse. In this work the flexural strength and Weibull modulus of microscopic, alumina platelets has been measured as 5.3±1.3 GPa and 3.7 respectively, using an in-situ micro 3-point bend test. A general approach to correct for the effect of variation in sample size on the Weibull modulus is presented, and the internal structure of the platelets is revealed by TEM.

JOURNAL ARTICLE

Feilden E, Ferraro C, Giuliani F, Vandeperre L, Saiz Eet al., 2016, Progress in novel and unexpected areas, MATERIALS TODAY, Vol: 19, Pages: 544-545, ISSN: 1369-7021

JOURNAL ARTICLE

Feilden E, Blanca EG-T, Giuliani F, Saiz E, Vandeperre Let al., 2016, Robocasting of structural ceramic parts with hydrogel inks, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 36, Pages: 2525-2533, ISSN: 0955-2219

JOURNAL ARTICLE

Scatigno GG, Ryan MP, Giuliani F, Wenman MRet al., 2016, The effect of prior cold work on the chloride stress corrosion cracking of 304L austenitic stainless steel under atmospheric conditions, MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, Vol: 668, Pages: 20-29, ISSN: 0921-5093

JOURNAL ARTICLE

Al Nasiri N, Saiz E, Giuliani F, Vandeperre LJet al., 2016, Grain bridging locations of monolithic silicon carbide by means of focused ion beam milling technique, MATERIALS LETTERS, Vol: 173, Pages: 214-218, ISSN: 0167-577X

JOURNAL ARTICLE

Bhowmik A, Dolbnya IP, Ben Britton T, Jones NG, Sernicola G, Walter C, Gille P, Dye D, Clegg WJ, Giuliani Fet al., 2016, Using coupled micropillar compression and micro-Laue diffraction to investigate deformation mechanisms in a complex metallic alloy Al13Co4, APPLIED PHYSICS LETTERS, Vol: 108, ISSN: 0003-6951

JOURNAL ARTICLE

Ferraro C, Garcia-Tunon E, Rocha VG, Barg S, Dolores Farinas M, Gomez Alvarez-Arenas TE, Sernicola G, Giuliani F, Saiz Eet al., 2016, Light and Strong SiC Networks, ADVANCED FUNCTIONAL MATERIALS, Vol: 26, Pages: 1636-1645, ISSN: 1616-301X

JOURNAL ARTICLE

Hatt O, Larsson H, Giuliani F, Crawforth P, Wynne B, Jackson Met al., 2016, Predicting chemical wear in machining titanium alloys via a novel low cost diffusion couple method, 3rd CIRP Conference on Surface Integrity, Publisher: ELSEVIER SCIENCE BV, Pages: 219-222, ISSN: 2212-8271

CONFERENCE PAPER

Glymond D, Vick M, Pan M-J, Giuliani F, Vandeperre LJet al., 2015, Creep of mullite zirconia composites, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 35, Pages: 3607-3611, ISSN: 0955-2219

JOURNAL ARTICLE

Al Nasiri N, Ni N, Saiz E, Chevalier J, Giuliani F, Vandeperre LJet al., 2015, Effect of microstructure and grain boundary chemistry on slow crack growth in silicon carbide at ambient conditions, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 35, Pages: 2253-2260, ISSN: 0955-2219

JOURNAL ARTICLE

This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.

Request URL: http://wlsprd.imperial.ac.uk:80/respub/WEB-INF/jsp/search-html.jsp Request URI: /respub/WEB-INF/jsp/search-html.jsp Query String: respub-action=search.html&id=00240085&limit=30&person=true