Yali Li, Yanli He, Jun Fu, Jianfeng Zhang. Influence of Si Content on Microstructures and Stress Rupture Properties of Hastelloy X Alloy Formed by Selective Laser Melting[J]. Chinese Journal of Lasers, 2024, 51(20): 2002307

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- Chinese Journal of Lasers
- Vol. 51, Issue 20, 2002307 (2024)

Fig. 1. SEM images of Hastelloy X alloy powder. (a) Batch A; (b) batch B

Fig. 2. SEM images of SLM-formed Hastelloy X alloy samples. (a) Batch A alloy before stress rupture test; (b) batch A alloy after stress rupture test; (c) batch B alloy before stress rupture test; (d) batch B alloy before stress rupture test

Fig. 3. EDS spectra of Hastelloy X alloy precipitates at grain boundary. (a)(b) Before stress rupture test, batch A alloy; (c)(d) after stress rupture test, batch A alloy; (e)(f) before stress rupture test, batch B alloy; (g)(h) after stress rupture test, batch B alloy

Fig. 4. EDS images of batch B alloy after stress rupture test

Fig. 5. TEM images of batch B alloy after stress rupture test. (a) Precipitates; (b) substrate SAED pattern; (c) substrate and precipitate diffraction patterns

Fig. 6. SEM images of stress rupture fractures of SLM formed Hastelloy X alloy samples under 815 ℃. (a)(b) Batch A alloy; (c)(d) batch B alloy
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Table 1. Chemical compositions of Hastelloy X alloy powder (mass fraction, %)
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Table 2. Process parameters for SLM forming of Hastelloy X
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Table 3. Stress rupture properties of SLM formed Hastelloy X alloy samples under 815 ℃/105 MPa

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