The solid particle erosion behavior of Al18B4O33 whisker-reinforced AC4C al alloy matrix composites

Tu, J.P.; Jin, Peng; Matsumura, Masanobu; Fukunaga, Hideharu

doi:10.1016/s0043-1648(98)00295-6

Cited by 23 publications

(30 citation statements)

References 21 publications

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“…Figures 2a and 2b show that, as the erosive mass increased, the mass loss also increased, in compatibility with previous investigations [31][32][33][34][35]. It is well known that there is a dramatic difference in the response of ductile and brittle materials when the mass loss in erosion is measured as a function of the angle of impact.…”

Section: Resultssupporting

confidence: 89%

Solid Particle Erosion of Aluminum In-Situ Reinforced with a Cobalt Aluminide

Lekatou¹

2017

Mater. Sci. Eng. Adv. Res

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The present effort studies the comparative solid particle erosion behaviour of Al-Co alloys of various compositions in the AlAl 9 Co 2 side of the Al-Co phase diagram. The alloys have been prepared by vacuum arc melting. The main concept behind the selection of the Al-Al 9 Co 2 region of the Al-Co phase diagram was the attainment of a two-phase structure (Al + Al 9 Co 2 ) that could combine the beneficial attributes of Al 9 Co 2 , as a Complex Metallic Alloy in-situ reinforcement, with the ductility/toughness of Al, as a matrix to the brittle intermetallic.Hypereutectic Al-Co alloys of various Co contents (7, 10, 15 and 20 wt.% Co), as well as monolithic commercially pure Al, were prepared by vacuum arc melting. The alloys were subjected to solid particle erosion testing at two impact angles (60° and 90°). The test results were interpreted based on weight change measurements and scanning electronic microscopy. It was revealed that the governing mechanisms change as the impact angle and the reinforcement volume fraction change. It was shown that factors affecting the brittle/ductile character of the material, such as Al 9 Co 2 volume fraction, Al 9 Co 2 coarseness, Co dissolved in Al, play a primary role on the erosion response of the alloys. The Al-Co alloys showed higher wear rates than Al. The wear rate increased with Co and, consequently, Al 9 Co 2 increasing. The surface characteristics and degradation mechanisms are being discussed.

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Section: Resultssupporting

confidence: 89%

Solid Particle Erosion of Aluminum In-Situ Reinforced with a Cobalt Aluminide

Lekatou¹

2017

Mater. Sci. Eng. Adv. Res

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“…It is a quite complex phenomenon, since it involves several processes. The main process is the mechanical impact, caused by the impingement of solid particles on the target material, secondary processes, like thermal, chemical and physical reactions between the counterparts are taking place during erosion [15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Effect of Solid Particle Erosion on the Aqueous Corrosion Behaviour of a Ti6Al4V Sheet

Karantzalis¹

2017

Mater. Sci. Eng. Adv. Res

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The economic and effective operation of machinery and plant involved in fluids handling is increasingly dependent on the utilization of materials that combine high corrosion resistance and good wear resistance.The present study was undertaken in order to investigate the effect of solid particle erosion on the surface characteristics, the microstructure and the aqueous corrosion behavior of a Ti6Al4V sheet metal alloy. The scope of the present effort is to examine the possible way the solid particle erosion affect, by altering the Ti6Al4V surface characteristics, the subsequent electrochemical corrosion response. As for the solid particle erosion tests, three (3) different impact angles were selected, 30°, 60° and 90° degrees respectively. Angular alumina particles of 177 -250 μm size was used as the eroding media, injected, under 1 and 2 bars pressure, on the sample surface located at 10 mm distance from the injection nozzle. The mass loss was weighted and the wear rates were calculated. Surface roughness of the eroded surfaces was assessed and the microstructural modifications were evaluated using optical microscopy and SEM-EDX.Cyclic polarization measurements were conducted in an electrolyte simulating body fluids in order to ascertain the corrosion response of the surface treated samples. SEM-EDX analysis of the corroded surfaces was used in order to assess the corrosion mechanisms and the involved phenomena and to correlate them with the surface and the overall microstructural modifications.

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“…Advanced physical-mathematical models describing the erosion rate of metallic materials exist in the specialized literature Refs [5][6][7] however they cannot be applied to composite materials because of two main reasons: the nature of the matrix is fundamentally different than that of metals and the interaction between the two phases (matrix and fibers) leads to a more complex behavior than with metals. In fact, even metal matrix composites behave differently to erosion than their base alloy (that makes up the matrix) Refs [8,9].…”

Section: Introductionmentioning

confidence: 99%