Fracture Toughness (K1C) evaluation for dual phase medium carbon low alloy steels using circumferential notched tensile (CNT) specimens

Alaneme, Kenneth Kanayo

doi:10.1590/s1516-14392011005000028

Cited by 31 publications

(9 citation statements)

References 15 publications

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“…The fracture toughness of the Cu-Zn-Al alloys was evaluated using circumferential notch tensile (CNT) specimens [13]. The CNT testing was also performed at room temperature using an Instron universal testing machine.…”

Section: Fracture Toughness Evaluationmentioning

confidence: 99%

MECHANICAL AND CORROSION BEHAVIOUR OF IRON MODIFIED Cu-Zn-Al ALLOYS

Alaneme

Sulaimon²,

Olubambi³

2013

Acta Metall Slovaca

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The mechanical and corrosion behaviour of iron modified Cu-Zn-Al alloys has been investigated. Cu-Zn-Al alloys containing 20 and 25 wt. % Zn was produced by casting method with and without the addition of 0.1wt. % iron. The alloys were subjected to a homogenizationcold rolling-annealing treatment schedule, before the alloys were machined to specifications for tensile test, fracture toughness, hardness measurement, corrosion test and microstructural analysis. From the test results, it was observed that the structures of the Cu-Zn-Al alloys were modified by iron addition with near equi-axed grain morphologies developed. There was no significant difference in the hardness of the iron modified and the unmodified Cu-Zn-Al alloys, but the tensile strength, strain to fracture, and fracture toughness of the alloys improved with iron addition. The Cu-Zn-Al alloys also exhibited good corrosion resistance in 3.5 wt. % NaCl and 0.3M H 2 SO 4 solutions. It was however observed that irrespective of iron addition, the mechanical properties and corrosion resistance of the Cu-20Zn-4Al-xFe alloy compositions where better in comparison with the Cu-25Zn-4Al-xFe alloy grades (where x=0,0.1wt. %).

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Section: Fracture Toughness Evaluationmentioning

confidence: 99%

MECHANICAL AND CORROSION BEHAVIOUR OF IRON MODIFIED Cu-Zn-Al ALLOYS

Alaneme

Sulaimon²,

Olubambi³

2013

Acta Metall Slovaca

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“…Mechanical characterization such as tensile strength and elongation experiments by using Universal Testing Machine (UTM) of Al/SiC has been reported [8] for varying mass fraction of SiCp with Aluminium. Hardness [2], Fracture toughness [3,4], tensile fracture behavior on Circumferential Notched Tensile (CNT) Specimens [5,6] on Compact Tension (CT) test specimen [13,14] of Al/SiC was studied by different researchers and most of them compared their results with the unreinforced aluminium alloy. In this research work, a new method of finding the fracture toughness, using Circumferential Notched Tensile (CNT) Specimens, is utilized which is a recent advance in fracture toughness testing method is adopted.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on fracture toughness of Al6061–graphite by using Circumferential Notched Tensile Specimens

Doddamani¹,

Kaleemulla²

2016

Frattura Ed Integrità Strutturale

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ABSTRACT. This paper presents the experimental work carried out on the fracture behavior of aluminium 6061 (Al6061) and graphite particulate composites. The required specimens are prepared using stir casting method with graphite proportions ranging from 3 to 12 % by weight. The fracture behavior of Al6061-graphite particulate composites produced using stir casting method, was investigated by conducting experiments on Universal Testing Machine (UTM). Circumferential Notched Tensile (CNT) specimens were utilized to evaluate the fracture toughness of the composites. From the experiment the fracture toughness KIC= 15.85MPa m 1/2 is obtained for Al6061-9% Graphite. Further, the experimental results revealed that, except 12% graphite, the fracture toughness of Al6061-graphite was observed to increases with an increase in weight percentage of graphite. The experimental results reinforce that Al6061-graphite particulate MMCs are suitable for automotive and aerospace applications requiring high fracture toughness apart from good wear resistance.

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“…The fracture toughness of the composites was determined using a circumferential notch tensile (CNT) testing approach (Alaneme, 2011). The composites for the test were machined having gauge length, specimen diameter (D), notch diameter (d), and notch angle of 30 mm, 5 mm, 4.2 mm, and 60°respec-tively.…”

Section: Mechanical Testingmentioning

confidence: 99%

Microstructure and mechanical behavior of stir-cast Zn–27Al based composites reinforced with rice husk ash, silicon carbide, and graphite

Alaneme

Ajayi

2017

Journal of King Saud University - Engineering Sciences

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The microstructure and mechanical properties of Zn-27Al based composites reinforced with rice husk ash (RHA), silicon carbide (SiC), and graphite (C g ) particles have been investigated. The Zn-27Al composites consisting of varied weight ratios of the reinforcing materials were produced using the stir casting process. Hardness test, tensile properties evaluation, fracture toughness determination, and microstructural examination, were used to characterize the composites produced. Results show that the microstructures of the composites are similar, consisting of the dendritic structure of the Zn-27Al alloy matrix with fine dispersion of the reinforcing particles. The hardness of the composites decreased with increase in the weight percent of RHA (and corresponding decrease in SiC weight percent) in the reinforcement. The tensile strength and yield strength decreased slightly with increase in the weight ratio of RHA in the composites with a maximum of 8.5% and 9.6% reductions respectively observed for as much as 40% RHA (corresponding to 40% reduction in SiC) in the hybrid reinforcement. Although some of the composite compositions containing RHA had slightly higher % elongation values compared with those without RHA, it was generally observed that the % elongation was invariant to the composite RHA content. The fracture toughness of the composites increases with increase in the weight percent of RHA with as much as a 20% increase obtained for as much as 40% RHA (corresponding to 40% reduction in SiC) in the hybrid reinforcement. ª 2015 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Fracture Toughness (K1C) evaluation for dual phase medium carbon low alloy steels using circumferential notched tensile (CNT) specimens

Cited by 31 publications

References 15 publications

MECHANICAL AND CORROSION BEHAVIOUR OF IRON MODIFIED Cu-Zn-Al ALLOYS

MECHANICAL AND CORROSION BEHAVIOUR OF IRON MODIFIED Cu-Zn-Al ALLOYS

Experimental investigation on fracture toughness of Al6061–graphite by using Circumferential Notched Tensile Specimens

Microstructure and mechanical behavior of stir-cast Zn–27Al based composites reinforced with rice husk ash, silicon carbide, and graphite

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