Static Mechanical Properties of Green Compact Specimens Fabricated by Metal Material Extrusion

doi:10.12068/j.issn.1005-3026.2025.20230263

Abstract

Abstract:

There is a lack of systematic research on the static mechanical properties of products fabricated via metal material extrusion （MME） additive manufacturing. Three types of 17-4PH stainless steel powder/polymer composite filament were firstly studied. Then， the formability of the filament was verified by forming green compact specimens using ordinary material extrusion manufacturing equipment through the preparation work for static mechanical properties. The tensile， compressive and flexural properties were tested to analyze their static mechanical properties and explore the influence of different metal powder filling content. The results show that the self-made composite filament can produce green compact products of good quality. When the filling content of 17-4PH stainless steel powder increases from 40% to 50%， the tensile strength of the specimens is decreased by about 7.8%， compressive strength is decreased by 39.2% and flexural strength is reduced by about 30%.

Key words: metal material extrusion, 17-4PH stainless steel powder, polymer composite filament, static mechanical property

CLC Number:

TH 164

Shi-jie JIANG, Shu-guang LI, Zi-zhao XU, Fei WANG. Static Mechanical Properties of Green Compact Specimens Fabricated by Metal Material Extrusion[J]. Journal of Northeastern University(Natural Science), 2025, 46(9): 95-101.

Figures/Tables 19

Fig.1 Distribution of 17-4PH stainless steel powder particle size

Table 1 Properties of 17-4PH stainless steel

D₁₀	D₅₀	D₉₀
17.417	30.663	52.869

Fig.2 Tensile specimen(unit：mm)

Fig.3 Compressive specimen(unit：mm)

Fig.4 Flexural specimen(unit：mm)

Table 2 Processing parameter setting

过程参数	设置
填充比例/%	100
填充方式	直线填充
成型速度/(mm·s^-1)	10
平台温度/℃	90
喷嘴直径/mm	0.6
成型温度/℃	240
层厚/mm	0.25

Fig.5 Flexural test process

Fig.6 Self-made composite filament with different filling contents

Fig.7 Green compact specimens with different 17-4PH stainless steel powder filling rates after tensile test

Fig.8 Stress-strain curves of tensile test

Table 3 Tensile test results of green compact specimens fabricated from different self-made composite filaments

试件	平均最大拉伸力/N	平均拉伸强度/MPa	平均拉伸模量/MPa	平均断裂应变/%
T₄₀	359.5	9.0	530.3	4.01
T₄₅	351.9	8.8	615.2	3.30
T₅₀	332.8	8.3	751.1	2.16
FFF PLA试件^[19-21]	—	30~70	1 890~3 900	2~5

Fig.9 Compression and deformation process of green compact specimens

Fig.10 Green compact specimens after compression test

Fig.11 Stress-strain curves of compression test

Table 4 Compression test results of green compact specimens fabricated from different self-made composite filaments

试件	平均最大压缩力/N	平均压缩强度/MPa	平均压缩模量/MPa
C₄₀	6 853.3	54.1	533.8
C₄₅	5 421.1	42.8	628.7
C₅₀	4 171.6	32.9	725.4

Fig.12 Green compact specimens after flexural test

Fig.13 Crack microstructure of green compact specimens after flexural test

Fig.14 Stress-strain curves of flexural test

Table 5 Flexural test results of green compact specimens fabricated from different self-made composite filaments

试件	最大弯曲力/N	平均弯曲强度/MPa	平均弯曲模量/MPa	平均断裂应变/%
F₄₀	29.4	17.6	1092.6	2.81
F₄₅	24.9	14.9	1366.7	2.00
F₅₀	20.6	12.3	1582.9	1.48

References 22

[1]	Thompson Y， Gonzalez-Gutierrez J， Kukla C， et al. Fused filament fabrication， debinding and sintering as a low cost additive manufacturing method of 316L stainless steel［J］. Additive Manufacturing， 2019， 30： 100861.
[2]	Suwanpreecha C， Manonukul A. A review on material extrusion additive manufacturing of metal and how it compares with metal injection moulding［J］. Metals， 2022， 12（3）： 429.
[3]	Gloeckle C， Konkol T， Jacobs O， et al. Processing of highly filled polymer-metal feedstocks for fused filament fabrication and the production of metallic implants［J］. Materials， 2020， 13（19）： 4413.
[4]	Shaikh M Q， Nath S D， Akilan A A， et al. Investigation of patient-specific maxillofacial implant prototype development by metal fused filament fabrication （MF³） of Ti-6Al-4V［J］. Dentistry Journal， 2021， 9（10）： 109.
[5]	Sargini M I M， Masood S H， Palanisamy S， et al. Additive manufacturing of an automotive brake pedal by metal fused deposition modelling［J］. Materials Today： Proceedings， 2021， 45： 4601-4605.
[6]	果春焕，严家印，王泽昌，等. 金属激光熔丝增材制造工艺的研究进展［J］. 热加工工艺， 2020， 49（16）： 5-10.
	Guo Chun-huan， Yan Jia-yin， Wang Ze-chang， et al. Research progress on metal laser fuse additive manufacturing process［J］. Hot Working Technology， 2020， 49（16）： 5-10.
[7]	Zhao C， Parab N D， Li X X， et al. Critical instability at moving keyhole tip generates porosity in laser melting［J］. Science， 2020， 370（6520）： 1080-1086.
[8]	张云舒，吴斌涛，赵昀，等. 电弧熔丝增材制造传热传质数值模拟研究现状与展望［J］. 机械工程学报， 2024， 60（8）： 65-80.
	Zhang Yun-shu， Wu Bin-tao， Zhao Yun， et al. Research progress in the numerical simulation of heat and mass transfer during wire arc additive manufacturing［J］. Journal of Mechanical Engineering， 2024， 60（8）： 65-80.
[9]	刘伟，李素丽，寇丹阳，等. 不同扫描速度下金属熔丝增材制造应力应变场分析［J］. 焊接技术， 2023， 52（7）： 1-5.
	Liu Wei， Li Su-li， Kou Dan-yang， et al. Analysis of stress-strain field in metal melt additive manufacturing by different scanning speeds［J］. Welding Technology， 2023， 52（7）： 1-5.
[10]	赵沧，杨源祺，师博，等. 金属激光增材制造微观结构和缺陷原位实时监测［J］. 科学通报， 2022， 67（25）： 3036-3053.
	Zhao Cang， Yang Yuan-qi， Shi Bo， et al. Operando monitoring microstructures and defects in laser fusion additive manufacturing of metals［J］. Chinese Science Bulletin， 2022， 67（25）： 3036-3053.
[11]	Godec D， Cano S， Holzer C， et al. Optimization of the 3D printing parameters for tensile properties of specimens produced by fused filament fabrication of 17-4PH stainless steel［J］. Materials， 2020， 13（3）： 774.
[12]	Masood S H， Song W Q. Development of new metal/polymer materials for rapid tooling using fused deposition modelling ［J］. Materials & Design， 2004， 25（7）： 587-594.
[13]	Ren L Q， Zhou X L， Song Z Y， et al. Process parameter optimization of extrusion-based 3D metal printing utilizing PW-LDPE-SA binder system［J］. Materials， 2017， 10（3）： 305.
[14]	冯建，张静，李邦怿，等. FDM用93W-Ni-Cu/ABS复合丝材的制备及表征［J］. 稀有金属与硬质合金， 2019， 47（5）： 19-24， 28.
	Feng Jian， Zhang Jing， Li Bang-yi， et al. Preparation and characterization of 93W-Ni-Cu/ABS composite filaments for FDM process［J］. Rare Metals and Cemented Carbides， 2019， 47（5）： 19-24， 28.
[15]	胡祥芬，牛富荣，周哲，等. 熔融沉积（FDM）工艺参数对SiC陶瓷微观结构和力学性能影响［J］. 硬质合金， 2021， 38（3）： 201-210.
	Hu Xiang-fen， Niu Fu-rong， Zhou Zhe， et al. Effect of fused deposition modeling（FDM） process parameters on microstructure and mechanical properties of SiC ceramics［J］. Cemented Carbide， 2021， 38（3）： 201-210.
[16]	张力，杨现锋，徐协文，等. 熔融沉积法3D打印制备氧化锆陶瓷及其力学性能研究［J］. 无机材料学报， 2021， 36（4）： 436.
	Zhang Li， Yang Xian-feng， Xu Xie-wen， et al. 3D printed zirconia ceramics via fused deposit modeling and its mechanical properties［J］. Journal of Inorganic Materials， 2021， 36（4）： 436.
[17]	Suwanpreecha C， Manonukul A. On the build orientation effect in as-printed and as-sintered bending properties of 17-4PH alloy fabricated by metal fused filament fabrication［J］. Rapid Prototyping Journal， 2022， 28（6）： 1076-1085.
[18]	Sotomayor M E， Várez A， Levenfeld B. Influence of powder particle size distribution on rheological properties of 316L powder injection moulding feedstocks［J］. Powder Technology， 2010， 200（1/2）： 30-36.
[19]	Fayazbakhsh K， Movahedi M， Kalman J. The impact of defects on tensile properties of 3D printed parts manufactured by fused filament fabrication［J］. Materials Today Communications， 2019， 18： 140-148.
[20]	Medibew T M. A comprehensive review on the optimization of the fused deposition modeling process parameter for better tensile strength of PLA printed parts［J］. Advances in Materials Science and Engineering， 2022， 2022（1）： 5490831.
[21]	Cojocaru V， Frunzaverde D， Miclosina C O， et al. The influence of the process parameters on the mechanical properties of PLA specimens produced by fused filament fabrication： a review［J］. Polymers， 2022， 14（5）： 886.
[22]	Houshyar S， Shanks R A， Hodzic A. The effect of fiber concentration on mechanical and thermal properties of fiber-reinforced polypropylene composites［J］. Journal of Applied Polymer Science， 2005， 96（6）： 2260-2272.