Shuai Chen, Fenghe Tao, Changzhi Jia. Microstructure and Mechanical Properties of 4Cr5MoSiV1 Steel Fabricated via Selective Laser Melting Post Tempering[J]. Chinese Journal of Lasers, 2019, 46(10): 1002005
- Chinese Journal of Lasers
- Vol. 46, Issue 10, 1002005 (2019)
Fig. 1. Size of tensile samples
Fig. 2. XRD profiles of samples
Fig. 3. Microstructures of samples. (a) Untreated; (b) 200 ℃/2 h; (c) 400 ℃/2 h; (d) 450 ℃/2 h; (e) 550 ℃/2 h;(f) 600 ℃/2 h; (g) 550 ℃/2 h+550 ℃/2 h; (h) 600 ℃/2 h+600 ℃/2 h
Fig. 4. Average microhardness of samples
Fig. 5. Variation curves of ultimate tensile strength and elongation of samples
Fig. 6. Fracture morphologies of samples. (a) Untreated; (b) 200 ℃/2 h; (c) 400 ℃/2 h; (d) 450 ℃/2 h;(e) 550 ℃/2 h; (f) 600 ℃/2 h; (g) 550 ℃/2 h+550 ℃/2 h; (h) 600 ℃/2 h+600 ℃/2 h
Fig. 7. Dimple morphologies of tensile fractures of samples. (a) 550 ℃/2 h; (b) 600 ℃/2 h; (c) 550 ℃/2 h+550 ℃/2 h; (d) 600 ℃/2 h+600 ℃/2 h
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Table 1. Chemical composition of 4Cr5MoSiV1 steel powder
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Table 2. Heat treatment parameters for 4Cr5MoSiV1 steel samples fabricated by SLM
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Table 3. Phase compositions of samples
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Table 4. FWHM and 2θ of α-Fe phase of each sample
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Table 5. Grain sizes of samples
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