Lü Hao, Yang Zhibin, Wang Xin, Yu Chunguang. Microstructures and Tensile Properties of GH4099 Alloy Fabricated by Laser Additive Manufacturing After Heat Treatment[J]. Chinese Journal of Lasers, 2018, 45(10): 1002003
- Chinese Journal of Lasers
- Vol. 45, Issue 10, 1002003 (2018)
Fig. 1. Morphology of GH4099 alloy powders
Fig. 2. Size of tensile specimen
Fig. 3. Microstructures of as-deposited GH4099 alloy. (a) OM morphology of as-deposited sample; (b) microstructure of columnar dendrite; (c) microstructure of layer boundaries; (d) SEM image of γ-γ' eutectic phase
Fig. 4. Microstructures of GH4099 alloy fabricated by laser additive manufacturing after heat treatment. (a) OM image of solution treated sample; (b) OM image of solution-aging treated sample; (c) SEM image of solution treated sample; (d) SEM image of solution-aging treated sample
Fig. 5. Mechanical properties of GH4099 alloy fabricated by laser additive manufacturing after different heat treatments.(a) Strength; (b) elongation
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Table 1. Chemical composition of GH4099 alloy powders
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Table 2. Heat treatment process for as-deposited sample
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Table 3. EDS analysis of points A and B in Fig. 3 (d)
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