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增材制造Ti-6Al-4V點陣材料的研究進展
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西北有色金屬研究院

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秦創(chuàng)原引用高層次創(chuàng)新創(chuàng)業(yè)人才、中國載人航天工程空間應(yīng)用系統(tǒng)資助(項目號QCYRCXM-2022-182、KJZ-YY-NCL104)


Research Progress on Additive manufactured Ti-6Al-4V Lattice materials
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1.Northwest Institute for Nonferrous Metal Research,Xi’an 710016;2.China

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    摘要:

    增材制造技術(shù)成形Ti-6Al-4V點陣材料具有高強度、低密度、生物相容性好的性能特點,在航空航天、生物醫(yī)療、海洋等領(lǐng)域具有極大應(yīng)用潛力。本文概述了近年來增材制造Ti-6Al-4V點陣材料的研究進展,重點對選區(qū)激光熔化(SLM)和電子束選區(qū)熔化(SEBM)技術(shù)成形點陣材料的力學(xué)性能、失效行為、微觀組織進行分析與總結(jié)。研究發(fā)現(xiàn),SLM和SEBM技術(shù)均可獲得保留原始結(jié)構(gòu)特征的點陣材料,且增材制造骨骼型Diamond 極小曲面Ti-6Al-4V點陣材料抗壓強度可達到411.71 MPa,屈服強度達到317.48 MPa,強度可與鎂合金相媲美;點陣材料失效行為主要有45°剪切斷裂以及水平斷裂,剪切斷裂型點陣材料強度較高,在承載方面具有獨特優(yōu)勢,而呈水平方向斷裂的點陣材料多為梯度型點陣材料,其應(yīng)力應(yīng)變曲線波動范圍較小,在能量吸收能力方面表現(xiàn)出明顯的優(yōu)勢;熱處理可有效消除增材制造過程中帶來的殘余應(yīng)力、降低粗糙度、轉(zhuǎn)變亞穩(wěn)、針狀α"馬氏體為α+β相,進而增加點陣材料的塑性,且不降低甚至提高部分Ti-6Al-4V點陣材料的強度。最后,對增材制造Ti-6Al-4V點陣材料的現(xiàn)存弊端以及未來發(fā)展趨勢進行了展望。

    Abstract:

    High-strength, Low density periodic Ti-6Al-4V lattice materials built with additive manufacturing provide relatively widespread applications for aerospace, biomedicine, marine and other fields. In this paper, the reported compressive properties, failure modes, microstructure and the heat treatment of Selective laser melting (SLM) and Selective electron beam melting (SEBM) additive manufatured Ti-6Al-4V lattice materials are reviewed. According to statistics, the continuous and integrated lattice materials can be manufatured via SLM and SEBM. And more importantly, the compressive strength and yield strength of skeleton-based Diamond TPMS lattice materials can reach to 411.71 MPa and 317.48 MPa respectively, which are comparable to those of magnesium alloys. It is also be found that the main failure modes of Ti-6Al-4V lattice materials are 45° shearing fracture and horizontally fracture. Shearing fractured lattice materials have unique advantages in load-bearing capacity, while horizontally fractured lattice materials with smaller fluctuation in stress-strain curves, showing dominant superiority in energy absorption capacity. Heat treatment is an effective method to eliminate the residual stress, reduce the roughness and transform acicular α "martensite to α+β phase caused by additive manufacturing, and then increase the ductility of lattice materials without reducing or even increasing the strength of Ti-6Al-4V lattice materials. Finally, the existing disadvantages and future development trend of additive Ti-6Al-4V lattice materials are prospected.

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樊永霞,林彥,敖慶波,王建忠.增材制造Ti-6Al-4V點陣材料的研究進展[J].稀有金屬材料與工程,2023,52(10):3630~3639.[Fan Yongxia, Lin Yan, Ao Qingbo, Wang Jianzhong. Research Progress on Additive manufactured Ti-6Al-4V Lattice materials[J]. Rare Metal Materials and Engineering,2023,52(10):3630~3639.]
DOI:10.12442/j. issn.1002-185X.20230146

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  • 收稿日期:2023-03-21
  • 最后修改日期:2023-09-05
  • 錄用日期:2023-04-27
  • 在線發(fā)布日期: 2023-10-27
  • 出版日期: 2023-10-24