Optimal Design Experiment of Ageing Time and Temperature in Inconel-713C Superalloy Based on Hardness Objective

Safarloo, Sama; Loghman, Fatemeh; Azadi, Mahboobeh; Azadi, Mohammad

doi:10.1007/s12666-018-1291-2

Cited by 9 publications

(3 citation statements)

References 21 publications

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“…Therefore, it can be hypothesized that rebounded Inconel 713C particles acted as "shot peening balls" to apply extra work hardening onto the deposited layer; hence, the bottom portion of the coating (50 µm to interface) received more peening or hammering and exhibits higher hardness [15]. Hardness is an indicator of wear resistance [16]; therefore, cold-sprayed Inconel 713C coating, with improved hardness compared with bulk Inconel 713C [17] and the Inconel 718 substrate, is promising to enhance the wear resistance of the Inconel 718 substrate.…”

Section: Hardnessmentioning

confidence: 99%

Inconel 713C Coating by Cold Spray for Surface Enhancement of Inconel 718

Chee

Tan

et al. 2021

Metals

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Inconel 713C is a nickel-based superalloy usually considered as a material of poor weldability due to its susceptibility to hot cracking in the heat-affected zones. Cold spray, a solid-state deposition technology that does not involve melting, can be proposed as a methodology to deposit Inconel 713C for surface enhancement of other target components. In this study, Inconel 713C coating was deposited on Inconel 718 substrate with a high-pressure cold spray system. The coating was characterized in terms of microstructure, hardness, and wear properties. The cold-sprayed Inconel 713C coating has a low porosity level and refined grain structures. Microhardness of the Inconel 713C coating was much higher than the Inconel 718 substrate. The sliding wear tests showed that the wear resistance of the cold-sprayed Inconel 713C coating is three times higher than the Inconel 718 substrate, making the coating a suitable protective layer. The main wear mechanisms of the coating include oxidation, tribo-film formation, and adhesive wear.

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Section: Hardnessmentioning

confidence: 99%

Inconel 713C Coating by Cold Spray for Surface Enhancement of Inconel 718

Chee

Tan

et al. 2021

Metals

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“…Due to the existence of the strain age cracking mechanism [19] the samples heated at 1240 °C were not heated with a furnace, but were placed directly at a given temperature in order to maximize the heating speed of the samples. The use of higher temperature compensates for the time needed to heat the furnace, which additionally increases the mobility of the grain boundaries [20]. The samples were cooled with a furnace to the temperature of 1176 °C, and then in the air in order to reduce the stresses arising during cooling, which may lead to cracking at the grain boundaries [21].…”

Section: Materials and Research Methodsmentioning

confidence: 99%

Analysis of direct metal laser sintering DMLS and heat treatment influence on the Inconel 713C nickel alloy structure

2021

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The group of nickel based superalloys produced in the DMLS (Direct Metal Laser Sintering) process is limited to materials, which produced conventionally do not have properties to allow to use them for rotating components of aircraft engines. This work attempts to optimize the technological parameters of the DMLS process for the Inconel 713C nickel superalloy. A heat treatment was performed for selected samples to investigate the effect on the morphology of the Ni3Al phase. The microstructure analysis and hardness tests were carried out. The material after the DMLS process was characterized by the presence of much smaller dendrites than the cast material and exceeded its hardness. For the tested variants of heat treatment, the material was characterized by smaller sizes of the Ni3Al phase. In order to ensure the stability of the microstructure, an optimization of the dedicated heat treatment after the DMLS process is required, as the standard heat treatment for Inconel 713C cast nickel superalloy does not fully recrystallize the material.

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“…However, the morphology of MC carbides changed from the acicular to the rounded shape. More M23C6-type carbides were precipitated in the matrix, among other specimens before creep testing, as shown in Figure 2(d the phase identification of all phases has been conducted by X-ray diffraction patterns (XRD) in some previous studies [19,23].…”

Section: Microstructral Evaluationmentioning

confidence: 99%

Effects of Ageing and Forging on Short-term Creep Behaviors of Inconel-713C Superalloy at 850 °C

Azadi

Mohammadi

2020

IJE

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In this paper, the short-term creep behavior of the Inconel-713C superalloy after different pre-treatments including the ageing and forging processes has been studied at 850 °C. The ageing heat treatment was heating at 930 °C for 16 hours without solutioning process. The optical microscopy (OM) and the scanning electron microscopy (SEM) techniques were applied for microstructural evaluations. The results showed that although the ageing treatment increased the γ' phase content, the age-hardened material had a lower creep lifetime (about 40%) with respect to the as-cast alloy. This was related to the decrease in the amount of M23C6-type secondary carbides precipitation. When the Inconel-713C superalloy specimen was forged at 1200 °C, the third stage of the creep curve (strain versus time) increased drastically and shortened the creep lifetime. The small grain size of the forged specimen was responsible for such inverse creep behavior. In addition, fractographs of this specimen indicated intragranular cracks on the ruptured surface. When the forged sample was age-hardened directly without the solutioning treatment, the creep lifetime increased about 4 times as compared to the forged specimen.

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Optimal Design Experiment of Ageing Time and Temperature in Inconel-713C Superalloy Based on Hardness Objective

Cited by 9 publications

References 21 publications

Inconel 713C Coating by Cold Spray for Surface Enhancement of Inconel 718

Inconel 713C Coating by Cold Spray for Surface Enhancement of Inconel 718

Analysis of direct metal laser sintering DMLS and heat treatment influence on the Inconel 713C nickel alloy structure

Effects of Ageing and Forging on Short-term Creep Behaviors of Inconel-713C Superalloy at 850 °C

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