用表面重熔分析了共晶成分钛金属基复合材料的激光粉末床熔合

IF 2.2 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Technology Pub Date : 2023-03-02 DOI:10.1080/02670836.2023.2178178

William R. Hixson, Junyang Yu, A. Wilson, H. Stone, D. Isheim, J. Coakley

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引用次数: 0

摘要

钛基金属基复合材料(MMCs)是航空航天工业中具有很高性能的一类材料，但由于加工性能差，其应用一直受到阻碍。现在人们已经认识到，通过利用激光粉末床熔合的快速冷却速率，并针对不变的反应成分，以最大限度地减少凝固开裂的倾向，可以在原位形成mmc。我们对弧熔Ti-0.38C、Ti-1.67B、Ti-8.5Si和Ti-32.5Fe wt-%共晶成分进行激光线扫描和表面重熔，以评估低成本激光粉末床熔合(LPBF)工艺的潜在材料适应性，并确定纳米结构和硬度性能。结果表明，MMCs具有良好的LPBF性能，性能优于传统合金。

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Eutectic composition titanium metal matrix composites for laser powder bed fusion via surface remelt analyses

Ti-based metal matrix composites (MMCs) represent a material class with highly desired performance for the aerospace industry, but implementation has been hindered by poor processability. It is now being realised that MMCs can be formed in situ through the exploitation of rapid cooling rates of laser powder bed fusion, and targeting invariant reaction compositions to minimise the propensity for solidification cracking. We perform laser line scans and surface remelts of arc-melted Ti–0.38C, Ti–1.67B, Ti–8.5Si and Ti–32.5Fe wt-% eutectic compositions to assess potential material amenability to the laser powder bed fusion (LPBF) process at low cost as well as determining the nanostructure and hardness properties. The results indicate that MMCs are amenable to LPBF and may outperform conventional alloys.

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来源期刊

Materials Science and Technology 工程技术-材料科学：综合

CiteScore

2.70

自引率

5.60%

发文量

审稿时长

3 months

期刊介绍：《Materials Science and Technology》（MST） is an international forum for the publication of refereed contributions covering fundamental and technological aspects of materials science and engineering.