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添加制造的Ti3Al2V合金的疲劳行为

Amit Bandyopadhyay¹, Sushant Ciliveri¹, Stefano Guariento¹

¹W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA.

Materials science in additive manufacturing

|January 4, 2024

概括

这项研究探讨了增材制造的-- (Ti3Al2V) 的性能. 优化的构造方向显著提高了疲劳强度,显示了Ti3Al2VV.

科学领域:

材料科学材料科学材料科学
增材制造增材制造增材制造
生物医学工程生物医学工程

背景情况:

合金对于骨科植入物至关重要,因为它们的生物相容性和机械性能.
目前的标准是Ti6Al4V,但对Ti3Al2V等新型合金的研究仍在进行中.
增材制造 (AM) 提供了设计灵活性,但可以在材料属性中引入异构性.

研究的目的:

为了评估增材制造的Ti3Al2V.的拉伸,压缩和疲劳行为.
研究构造方向对Ti3Al2V的机械性能的影响.
评估Ti3Al2V作为Ti6Al4V在承载性骨科应用中的替代品的潜力.

主要方法:

Ti3Al2V合金是使用激光粉末床融合 (L-PBF) 制造的.
样品在各种构造方向 (0°,45°,90°) 上进行了拉伸,压缩和疲劳性能测试.
在Ti3Al2V和Ti6Al4V之间比较了机械性能数据.

主要成果:

Ti3Al2V 的最终抗拉强度为 989 ± 8 MPa.
压缩产量强度因构造方向而异,0°和45°方向显示强度高于90°.
疲劳测试显示出显著的异构性;Ti3Al2V在0°构造方向下达到512MPa的耐力极限,是90°方向的两倍多.

结论:

构造方向对增材制造的Ti3Al2V.的机械性能产生了重大影响.
与Ti6Al4V相比,Ti3Al2V在特定方向上表现出优越的疲劳性能.
Ti3Al2V显示出在要求高的骨科植入物应用中取代Ti6Al4V的巨大潜力.

关键词:

增材制造增材制造是一种增材制造.合金设计合金设计疲劳行为疲劳行为.这种植入物能够承受负荷.合金是一种合金.

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