Influence of grain orientation on the incipient oxidation behavior of Haynes 230 at 900  °C

Wang, Xu; Fan, Fan; Szpunar, Jerzy A.; Zhang, Lina

doi:10.1016/j.matchar.2015.06.029

Cited by 40 publications

(5 citation statements)

References 42 publications

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“…On the other hand, the heat-treated wrought sample shows only a slight preferential < 111 > orientation, perpendicular to the cross section. The influence of the crystallographic texture of a Haynes 230 superalloy on oxidation was investigated by Xu et al [49]. They showed that surfaces parallel to {111} planes have a better oxidation resistance than those parallel to {110} or {100} planes.…”

Section: Effect Of Alloy Texturementioning

confidence: 99%

Intergranular oxidation of Ni-base alloy 718 with a focus on additive manufacturing

et al. 2020

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The intergranular oxidation in air at 850°C of alloy 718 produced by laser beam melting and electron beam melting was compared to that of the wrought alloy. Quantitative analyses revealed that the amount of grain boundary oxidation was similar for these alloys. However, the additively manufactured ones presented deeper and thicker oxides at grain boundaries, due to grain size heterogeneity and to a smaller number of special boundaries. Results show that intergranular oxidation kinetics follows Wagner's theory on internal oxidation considering not only O diffusion at the intergranular oxide/metal interfaces but also Al and Ti diffusion in the bulk.

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Section: Effect Of Alloy Texturementioning

confidence: 99%

Intergranular oxidation of Ni-base alloy 718 with a focus on additive manufacturing

et al. 2020

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“…Furthermore, GH3230 is expected to be a candidate material for intermediate heat exchangers in future fourth generation nuclear reactors. [5,6] The processing methods of GH3230 alloy mainly focus on casting, forging, and welding. The equiaxed grain structure is generally obtained by these traditional molding methods, but the working environment temperature of the actual engine components is higher.…”

Section: Introductionmentioning

confidence: 99%

Effect of Carbon Content on the Microstructure and Mechanical Properties of GH3230 Alloy Formed by Laser Melting Deposition

Dong

Hao

et al. 2023

Adv Eng Mater

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Optimizing alloy composition is an effective way to improve the microstructure and properties of superalloys. Herein, the influence of carbon content (0.071, 0.105, and 0.136 wt%, respectively) on the microstructure and mechanical properties of GH3230 alloy formed by laser melting deposition is investigated. The results indicate that the carbon contents affect the quantity, morphology, and distribution of carbides in the matrix of the alloy. As the carbon content increases, the number of carbides increases, and the morphology of the carbides at the grain boundaries changes from discontinuous blocks to chains, and finally into strips. Three alloys with high plasticity at room temperature, and the maximum elongation close to 60% is achieved for alloy containing 0.105 wt% C. The high‐temperature elongation of the alloy also increases at first and then decreases with the carbon. It is therefore concludes that the optimized carbon content is 0.105 wt% by combining both the strength and plasticity for GH3230 alloy prepared by laser melting deposition.

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“…As a solid‐solution strengthened nickel‐based superalloy, GH3230 (also known as Haynes 230) owns excellent thermal stability and oxidation resistance, 16,17 and hence it has been applied as materials in advanced aero‐engines for combustion chamber flame cylinder 18–20 . The published research on GH3230 is mostly concentrated on high‐temperature mechanical properties and mechanical fatigue behaviors 16,21–26 .…”

Section: Introductionmentioning

confidence: 99%

Thermal fatigue crack initiation and propagation behaviors of GH3230 nickel‐based superalloy

Zhang,

Hou,

Jin

et al. 2023

Fatigue Fract Eng Mat Struct

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The drastic severe temperature cycle in an aero‐engine combustion chamber leads to large thermal fatigue stress, which may induce thermal fatigue failure of the combustion chamber. In this paper, thermal fatigue crack initiation and propagation behaviors of GH3230 nickel‐based superalloy sheet specimens with V‐notch were studied under different peak temperatures 800°C, 900°C, and 1,000°C using self‐built thermal fatigue equipment. The temperature, stress, and crack propagation driving force of the V‐notch specimen were discussed in detail. Results show that the thermal fatigue crack initiation life gradually decreases with the increase of the peak temperature. Oxidation caused by high temperature will weaken alloy's strength and accelerate its crack propagation. Higher peak temperature will make the crack propagate faster and the thermal deformation at V‐notch end easier to accumulate. At last, there is a good consistency between fitting curves from the modified Paris formula and the experiment results.

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Influence of grain orientation on the incipient oxidation behavior of Haynes 230 at 900 °C

Cited by 40 publications

References 42 publications

Intergranular oxidation of Ni-base alloy 718 with a focus on additive manufacturing

Intergranular oxidation of Ni-base alloy 718 with a focus on additive manufacturing

Effect of Carbon Content on the Microstructure and Mechanical Properties of GH3230 Alloy Formed by Laser Melting Deposition

Thermal fatigue crack initiation and propagation behaviors of GH3230 nickel‐based superalloy

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