Selective Laser Melting of TiC-Fe via Laser Pulse Shaping: Microstructure and Mechanical Properties.

IF 2.3 4区工程技术 Q3 ENGINEERING, MANUFACTURING

3D Printing and Additive Manufacturing Pub Date : 2023-08-01 Epub Date: 2023-08-09 DOI:10.1089/3dp.2021.0221

Himanshu Singh Maurya, Lauri Kollo, Marek Tarraste, Kristjan Juhani, Fjodor Sergejev, Konda Gokuldoss Prashanth

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引用次数: 0

Abstract

In the present study, TiC-Fe cermets were fabricated through selective laser melting (SLM) for the first time employing pulse wave using a pulse shaping technique and regular laser pulse wave. Two samples were fabricated each with adapting pulse shaping technique and regular laser pulse wave with varied laser peak power and exposure time to obtain an optimized parameter. The pulse shaping technique proves to be an optimal method for fabrication of the TiC-Fe-based cermet. The effect of the laser peak power and pulse shaping on the microstructure development was investigated through scanning electron microscopy and X-ray diffraction analysis. Two-phased microstructures revealed the distribution of TiC and Fe. A maximum hardness and fracture toughness of 1010 ± 65 MPa and 16.3 ± 1.7 MPa m^1/2, respectively, were observed for the pulsed-shaped samples illustrating that pulse shaping can be an effective way to avoid cracking in brittle materials processed by SLM.

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通过激光脉冲整形对 TiC-Fe 进行选择性激光熔化：微观结构和机械性能

本研究首次采用脉冲整形技术和常规激光脉冲波，通过选择性激光熔融（SLM）技术制造了 TiC-Fe 金属陶瓷。研究人员采用脉冲整形技术和常规激光脉冲波，并改变激光峰值功率和曝光时间，各制作了两个样品，以获得最佳参数。事实证明，脉冲整形技术是制造 TiC-Fe 基金属陶瓷的最佳方法。通过扫描电子显微镜和 X 射线衍射分析，研究了激光峰值功率和脉冲整形对微观结构发展的影响。两相微结构显示了 TiC 和 Fe 的分布。脉冲成形样品的最大硬度和断裂韧性分别为 1010 ± 65 MPa 和 16.3 ± 1.7 MPa m1/2，这说明脉冲成形可以有效避免 SLM 加工的脆性材料出现裂纹。

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来源期刊

3D Printing and Additive Manufacturing Materials Science-Materials Science (miscellaneous)

CiteScore

6.00

自引率

6.50%

发文量

126

期刊介绍： 3D Printing and Additive Manufacturing is a peer-reviewed journal that provides a forum for world-class research in additive manufacturing and related technologies. The Journal explores emerging challenges and opportunities ranging from new developments of processes and materials, to new simulation and design tools, and informative applications and case studies. Novel applications in new areas, such as medicine, education, bio-printing, food printing, art and architecture, are also encouraged. The Journal addresses the important questions surrounding this powerful and growing field, including issues in policy and law, intellectual property, data standards, safety and liability, environmental impact, social, economic, and humanitarian implications, and emerging business models at the industrial and consumer scales.