High-temperature mechanical properties of highly porous Hastelloy-X nickel superalloy

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2026-05-01 Epub Date: 2026-02-10 DOI:10.1016/j.matlet.2026.140240

Aleksandra Bętkowska, Marcin Podsiadło, Adelajda Polkowska, Wojciech Polkowski

引用次数: 0

Abstract

In our recent study, we have reported pioneering results on the fabrication procedures, microstructural characteristics, and room-temperature mechanical properties of highly porous Hastelloy X (H-X) alloys with spherical, open porosity of up to 70 vol%. In the present work, the high-temperature mechanical behavior of these materials is investigated at 600, 800, and 1000 °C. The obtained results revealed that our highly porous H-X alloys exhibit mechanical strength at both room and elevated temperatures that are at least one order of magnitude higher than those reported for comparable porous metallic materials in the literature. Microstructural analysis indicates that discontinuously precipitated M₂₃C₆/M₆C grain boundary carbides play a dominant role in governing the mechanical response of the materials investigated.

查看原文本刊更多论文

高多孔哈氏合金- x镍高温合金的高温力学性能

在我们最近的研究中，我们报道了具有球形、开放孔隙率高达70 vol%的高多孔哈氏合金的制造工艺、显微结构特征和室温力学性能方面的开创性成果。在本工作中，研究了这些材料在600、800和1000℃时的高温力学行为。所得结果表明，我们的高多孔H-X合金在室温和高温下的机械强度至少比文献中报道的类似多孔金属材料高一个数量级。显微组织分析表明，不连续析出的M23C6/M6C晶界碳化物对材料的力学响应起主导作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive