The effect of solid solution treatment parameters on the microstructure and mechanical properties of A286 superalloy

IF 0.9 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI:10.1051/metal/2021075

Roya Shahedi, S. Kheirandish, Faraz Shirazi, M. Seifollahi

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引用次数: 1

Abstract

In this investigation, the effects of solution parameters on the microstructure and hardness of a Fe-Ni superalloy were studied. Samples were solutionized in temperature ranges of 900 °C to 1060 °C for the times of 0.5 h to 2.5 h, water quenched and aged at 720 °C for 16 h. for more structural examinations, some solutionized samples were aged at 800 °C and 860 °C for 8 h. The microstructure of the alloy was investigated using optical and scanning electron microscopes and the volume fraction of phases was measured by image analyzer software. The hardness of solutionized and aged specimens and tensile strength of aged samples at room temperature were also assessed. The results showed that hardness and ultimate tensile strength decrease with increasing solution temperature. It was found that increase in the solution temperature led to a decrease in volume fraction of η and carbide phases and an increase in the carbide sizes. It was also found that solution annealing time had no significant effect on the properties of the alloy.

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固溶处理参数对A286高温合金组织和力学性能的影响

研究了固溶参数对Fe-Ni高温合金显微组织和硬度的影响。样品在900°C至1060°C的温度范围内溶解0.5 h至2.5 h，水淬火，720°C时效16 h。为了进行更多的结构检查，将一些溶解的样品在800°C和860°C下时效8 h。用光学显微镜和扫描电镜观察合金的显微组织，用图像分析软件测量相的体积分数。测定了固溶试样和时效试样的硬度以及时效试样的室温抗拉强度。结果表明:随着固溶温度的升高，合金的硬度和极限抗拉强度降低;结果表明，随着溶液温度的升高，η相和碳化物相的体积分数降低，碳化物尺寸增大。固溶退火时间对合金的性能无显著影响。

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来源期刊

Metallurgical Research & Technology METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

1.70

自引率

9.10%

发文量

审稿时长

4.4 months

期刊介绍： Metallurgical Research and Technology (MRT) is a peer-reviewed bi-monthly journal publishing original high-quality research papers in areas ranging from process metallurgy to metal product properties and applications of ferrous and non-ferrous metals and alloys, including light-metals. It covers also the materials involved in the metal processing as ores, refractories and slags. The journal is listed in the citation index Web of Science and has an Impact Factor. It is highly concerned by the technological innovation as a support of the metallurgical industry at a time when it has to tackle severe challenges like energy, raw materials, sustainability, environment... Strengthening and enhancing the dialogue between science and industry is at the heart of the scope of MRT. This is why it welcomes manuscripts focusing on industrial practice, as well as basic metallurgical knowledge or review articles.