热处理温度对激光粉末床熔合制备高Ti/Al比镍基高温合金组织和性能的影响

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2025-10-08 DOI:10.1016/j.intermet.2025.109020

Jian Yao, Junkang Wu, Jie Su, Huabo Wu, Zi Wang, Wenli Wang, Liming Tan, Lan Huang, Feng Liu

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引用次数: 0

摘要

本研究采用激光粉末床熔合（LPBF）技术成功制备了高Ti/Al比（2.35）的镍基高温合金，并系统研究了不同热处理温度对合金显微组织和力学性能的影响。结果表明，高钛铝比合金具有良好的印刷性能。在1180℃固溶温度和830℃时效温度下，合金的强度和塑性达到了最佳平衡。这是由于再结晶程度最高，没有有害相析出，γ′相分布均匀。当固溶温度为1120℃时，η相析出，显著降低了合金的塑性。本研究不仅阐明了热处理温度影响高Ti/Al比镍基高温合金组织演变的机理，而且为高温合金材料设计和未来应用提供了理论支持和实践指导。

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Effect of heat treatment temperature on the microstructure and properties of high Ti/Al ratio nickel-based superalloys fabricated by laser powder bed fusion

In this study, high Ti/Al ratio (2.35) nickel-based superalloys were successfully fabricated using the laser powder bed fusion (LPBF) technique and systematically investigated how varying heat treatment temperatures influence the alloy's microstructure and mechanical properties. The findings indicate that the high Ti/Al ratio alloy possesses promising printability. At a solid solution temperature of 1180 °C and an aging temperature of 830 °C, the alloy demonstrates an optimal balance of strength and plasticity. This is attributed to the highest degree of recrystallization, the absence of harmful phase precipitation, and a uniform distribution of the γ′ phase. Moreover, a solid solution temperature of 1120 °C leads to η phase precipitation, significantly decreasing the alloy's plasticity. This study not only elucidates the mechanism by which heat treatment temperature affects the structural evolution of high Ti/Al ratio nickel-based superalloys but also offers theoretical support and practical guidance for superalloy material design and future applications.

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来源期刊

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.