粉末床熔合17-4 pham钢二阶弹性常数的超声测量

Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics Pub Date : 2023-04-28 DOI:10.1117/12.2656960

Shuai Ju, Haifeng Zhang

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引用次数: 0

摘要

近几十年来，金属增材制造(AM)因其降低成本和提高生产灵活性而取代了传统的钢铁制造，引起了研究人员和工业界的关注。然而，对增材制造钢性能的表征仍然很少。本文介绍了用超声法测定粉末床熔合增材制造的17-4 PH钢的二阶弹性常数。采用纵波相速度和横波相速度求解弹性常数。将现有的二阶弹性常数与传统制造的17-4 PH进行了比较，并分析了孔隙率对增材制造的17-4 PH钢二阶弹性常数的影响。

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Measurements of the second-order elastic constants of powder-bed fusion 17-4 PH AM steel using ultrasound

Additive manufacturing (AM) of metals has drawn attention by both researchers and industries in recent decades for replacing aspects of conventional steel fabrication due to lessened cost and higher production flexibility. However, the characterization of the properties of AM steel remains scarce. This paper presents the ultrasonic determination of the second-order elastic constants of 17-4 PH steel produced using powder bed fusion AM. Both longitudinal and shear wave phase velocities are used to solve for the elastic constants. The present values of second-order elastic constants are compared with traditionally manufactured 17-4 PH. Porosity effects on second-order elastic constants of additive-manufactured 17-4 PH steel are also analyzed.

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Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics

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