Effect of Aging Treatment on the Microstructures and Hardness of Fe-Ni-Cr Superalloy

Jumaidin, Ridhwan; Hamzah, Esah; Selamat, Mohd Zulkefli; Zulfattah, Z. M.; Hafidzal, M. H. M.

doi:10.15282/ijame.8.2013.30.0118

Cited by 8 publications

(4 citation statements)

References 15 publications

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“…In the study [7], the normalizing process for 6061 aluminum alloy was carried out by heating the metal at a temperature of 400˚C with a holding time of 2 hours. For this research, annealing was designed at 400 o C [6] with room air cooling, while quenching was carried out at the same temperature, 400 o C, with water cooling, with the same holding time of 2 hours.…”

Section: Figure 1 Heat Treatment Process Designmentioning

confidence: 99%

“…Heat treatment, in a broad sense, refers to one of the heating and cooling performed to change the mechanical properties, metallurgical structure, or residual stress state of metal products. In general, there are 3 (three) stages of a heat treatment process to increase the strength of aluminum alloys, the first is a solution heat treatment process followed by a quenching process and then age-hardening [7]. Changes in the mechanical properties of heat-treated aluminum alloys have also been carried out by several researchers [8], [9], [10], [11], [12], [13], [14].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Heat Treatment of Beverage Cans Remelting on Mechanical Properties

Irawan,

Yani

et al. 2023

ijmst

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This study compared the mechanical properties of the repeated melting of beverage cans. From the effects of the first melting, a chemical composition test was held out, which turned out that the aluminum produced was not explicitly admitted in the aluminum alloy series 2xxx, 3xxx, 4xxx or 6xxx. The semelting process I have increased the element Fe, as well as the addition of elements of Pb and Sn. Part of smelting I and II were annealed and quenched at 400?C with a holding time of 2 hours. The highest tensile strength is held from the first smelting product that has received quenching heat treatment, 9.67 kg/mm2. After remelting, it decreased to 9.07 kg/mm2. Products that have received quenching heat treatment have the most significant impact value, both for the first and second melting products, namely 74.34 BHN and 101.86 BHN. The most significant impact value was obtained from the first smelting product that received annealing heat treatment, which was 0.0388 J/mm2, and after receiving quenching heat treatment, the impact value became 0.0379 J/mm2.

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Section: Figure 1 Heat Treatment Process Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment of Beverage Cans Remelting on Mechanical Properties

Irawan,

Yani

et al. 2023

ijmst

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“…For oxidation resistance at high temperature, 15 to 28% Cr is added, whereas, for solid solution strengthening, 1-6% Mo is added. Meanwhile, for precipitation hardening effects, Al, Ti and Nb elements are added [25]. At high temperatures, Ni alloys provide longer service life and higher strength compared to most of the alloys available today [26,27].…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on Microstructure and Creep Behavior of Fe-40Ni-24Cr Alloy

et al. 2021

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Iron-nickel-chromium (Fe-Ni-Cr) alloy Haynes HR120 is an iron-nickel-based superalloy, which is extensively used in gas turbines. Hence, the materials for the fabrication of steam turbine blades should present great mechanical characteristics and creep properties. In this study, Fe-40Ni-24Cr was heat-treated at temperatures from 950 to 1250 °C. High temperature creep behavior and microstructure evolution of the selected heat-treated (1050 °C, 1200 °C, 1225 °C and 1250 °C) Fe-40Ni-24Cr alloy were assessed at temperatures of 800 °C and 900 °C under 100 MPa stress. The alloy consisted of titanium and niobium rich precipitates, namely NbC, (Nb,Ti)C, TiN and Ti(C,N) distributed in the matrix grain boundaries, which enhance the creep properties of the alloy. The hardness of heat-treated Fe-40Ni-24Cr alloy decreased with increasing temperature and grain size. The creep strain of the Fe-40Ni-24Cr alloy increased with escalation in the creep time and the temperature being under constant applied stress. Fe-40Ni-24Cr alloy shows a decrease in steady-state creep rate with an increase in grain size from 62 μm to 183 μm due to the grain boundary sliding mechanism and 183 μm to 312 μm due to the occurrence of dislocation climb. This result exhibited that grain size has a significant influence on the alloys’ high temperature creep properties.

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“…The elements are added for improving one property which may affect other properties inadvertently. Here, a good procedure is solid solution strengthening of copper [6]. Al bronze is an alloy where aluminum is added to copper.…”

Section: Introductionmentioning

confidence: 99%

Physical Behaviour of Thermally Affected Bronze and Brass

Kaiser¹,

Kaiser

2020

JMEST

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The physical behavior of thermally affected cast copper, aluminum bronze and brass has been studied by subjecting to heating isochronally for one hour at a range of 600°C. It shows that solid-solution hardening takes place into the Al added bronze and Zn added brass metal. Due to heating Al forms hard and brittle intermetallic of copper aluminates into the bronze metal which responses some age-hardening effects. The electrical conductivity of the metals increases initially through heat treatment due to stress relieving and finally decreases due to formation of intermetallic precipitates. The color of the heated samples are also studied through tristimulus color parameter 'L*', 'a*', and 'b*' values which were analyzed and evaluated in MATLAB software. It is found that incorporation of Al and Zn affects the color of cast Cu. The overall change of color occurs with increasing heating temperature due to chemical changes like oxidization, intermetallic formation, dissolution of phases, precipitation coarsening and recrystallization. Due to change of hardness and microstructural properties of the experimental metals, the sound intensity level also decreases at high heating temperature. A microstructural study confirms that the cast alloys content the different phases of grains and bring about recrystallized status under heating at 500°C for one hour.

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Effect of Aging Treatment on the Microstructures and Hardness of Fe-Ni-Cr Superalloy

Abstract: Aging treatment was conducted on Fe-Ni-Cr superalloy to observe its effect on the microstructures and hardness of the material. Solution treatments were carried out at 900

Cited by 8 publications

References 15 publications

Effect of Heat Treatment of Beverage Cans Remelting on Mechanical Properties

Effect of Heat Treatment of Beverage Cans Remelting on Mechanical Properties

Effect of Heat Treatment on Microstructure and Creep Behavior of Fe-40Ni-24Cr Alloy

Physical Behaviour of Thermally Affected Bronze and Brass

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