显微组织取向对电弧增材制造工艺制备的77 K和298 K 316LN力学性能的影响

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

Materials Letters Pub Date : 2025-04-11 DOI:10.1016/j.matlet.2025.138573

Xu Wang , Haiyan Zhang , Chaoxiong Qu , Zhiquan Huang , Mingxing Hu , Dean Deng

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引用次数: 0

摘要

采用电弧增材制造（WAAM）工艺对316LN奥氏体不锈钢单壁件进行了298 K和77 K的拉伸和冲击试验，研究了微观组织取向的影响。结果显示，拉伸强度、伸长率和冲击能有明显的取向依赖性变化，而屈服强度不受影响。此外，与298 K相比，77 K的屈服强度和抗拉强度都有显著提高（约两倍）。在建筑方向77k时，观察到机械性能显著增加。

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Effect of microstructural orientation on the mechanical properties of 316LN at 77 K and 298 K produced by wire arc additive manufacturing process

A single-wall part fabricated from 316LN austenitic stainless steel using gas tungsten arc welding (GTAW) within the wire arc additive manufacturing (WAAM) process was subjected to tensile and impact testing at 298 K and 77 K to investigate the influence of microstructural orientation. The results revealed a pronounced orientation-dependent variation in tensile strength, elongation, and impact energy, while yield strength remained unaffected. Furthermore, both yield and tensile strengths exhibited a substantial increase (approximately twofold) at 77 K compared to 298 K. A significant increase in mechanical properties was observed at 77 K within the building direction.

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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