Microstructure and Properties of TiC/AlMgSc Composites by Selective Laser Melting

Weiyun Ding; Fugui Si; Changgeng Xia; Dezhi Sun; Yakun Xu; Yingcui Xu; Haojie Cheng; Mengzhi Wang; Wei Ji

doi:10.3788/LOP231309

Laser & Optoelectronics Progress, Volume. 61, Issue 9, 0916002(2024)

Microstructure and Properties of TiC/AlMgSc Composites by Selective Laser Melting

Weiyun Ding¹, Fugui Si², Changgeng Xia², Dezhi Sun², Yakun Xu^2、*, Yingcui Xu², Haojie Cheng², Mengzhi Wang², and Wei Ji²

Author Affiliations

¹China National Heavy Duty Truck Group Company, Jinan 250101, Shandong, China

²Automobile Research Institute of China National Heavy Duty Truck Group Company, Jinan 250101, Shangdong, China

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Figures & Tables(12)

Fig. 1. Powder morphology and particle size distribution of AlMgSc alloy. (a) Powder morphology; (b) particle size distribution

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Fig. 2. Morphology and EDS analysis of TiC/AlMgSc composite powder. (a)(b) Powder topographies; (c)‒(f) EDS distribution map of elements

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Fig. 3. Effect of SLM forming parameters of TiC/AlMgSc composite powder on the density of the sample. (a) Laser power; (b) scanning speed; (c) hatching spacing

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Fig. 4. XRD patterns of AlMgSc alloy and TiC/AlMgSc composite formed by SLM

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Fig. 5. OM diagrams of TiC/AlMgSc composite sample formed by SLM. (a) Cross section; (b) longitudinal section

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Fig. 6. SEM diagrams and EDS analysis of TiC/AlMgSc composite sample formed by SLM. (a) (b) SEM diagrams; (c) EDS analysis of point 1; (d) EDS analysis of point 2

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Fig. 7. EBSD diagrams along the building direction of AlMgSc and TiC/AlMgSc samples formed by SLM. (a) EBSD orientation distribution of AlMgSc sample; (b) EBSD orientation distribution of TiC/AlMgSc sample; (c) PF diagrams of AlMgSc sample; (d) PF diagrams of TiC/AlMgSc sample

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$Tensile fracture morphologies of AlMgSc and TiC/AlMgSc samples formed by SLM. (a)‒(c) AlMgSc alloy; (d)‒(f) TiC/AlMgSc composite$

Fig. 8. Tensile fracture morphologies of AlMgSc and TiC/AlMgSc samples formed by SLM. (a)‒(c) AlMgSc alloy; (d)‒(f) TiC/AlMgSc composite

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Table 1. Chemical composition of AlMgSc alloy powder
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Table 1. Chemical composition of AlMgSc alloy powder
Element Al Mg Sc Zr Mn Si Fe Ti O
Mass fraction /% Bal. 4.7000 0.7900 0.3200 0.5900 0.0536 0.0858 0.0066 0.0203

Table 2. Processing parameters of SLM forming TiC/AlMgSc

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Table 2. Processing parameters of SLM forming TiC/AlMgSc

Sample	Laser power /W	Scanning speed /（mm·s^-1）	Hatching spacing /mm
L1，L2，L3，L4，L5	205，220，235，250，265	1200	0.07
S1，S2，S4，S5	250	1000，1100，1300，1400	0.07
H1，H3，H4，H5	250	1200	0.05，0.09，0.11，0.13

Table 3. EDS element distribution of white particles at
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Table 3. EDS element distribution of white particles at
Element Atomic fraction /%
Al Ti C
Point 1 0.62±0.02 49.76±0.12 49.62±0.16
Point 2 1.50±0.03 50.58±0.12 47.92±0.17

Table 4. Tensile properties of AlMgSc and TiC/AlMgSc samples formed by SLM
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Table 4. Tensile properties of AlMgSc and TiC/AlMgSc samples formed by SLM
Sample Tensile strength /MPa Yield strength /MPa Elongation /%
AlMgSc 556±4.5 526±4.6 12.42±0.4
TiC/AlMgSc 611±1.9 590±2.5 10.02±2.0

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Weiyun Ding, Fugui Si, Changgeng Xia, Dezhi Sun, Yakun Xu, Yingcui Xu, Haojie Cheng, Mengzhi Wang, Wei Ji. Microstructure and Properties of TiC/AlMgSc Composites by Selective Laser Melting[J]. Laser & Optoelectronics Progress, 2024, 61(9): 0916002

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