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Hai Chang

ShanghaiTech University

393 Middle Huaxia Road, Pudong

Shanghai, 201210

China

SCHOLARLY PAPERS

9

DOWNLOADS

410

TOTAL CITATIONS

3

Scholarly Papers (9)

1.

Process Parameter Optimization for Laser-Directed Energy Deposition Using Deep Reinforcement Learning

Number of pages: 23 Posted: 27 Dec 2023
ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, Chinese Academy of Sciences (CAS) - Institute of Metal Research and ShanghaiTech University
Downloads 88 (759,537)
Citation 1

Abstract:

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laser-directed energy deposition, Thermal Process Simulation, Deep reinforcement learning, proximal policy optimization, Vickers hardness measurement

2.

Effect of High Preheating on the Microstructure and Mechanical Properties of High Gamma Prime Ni-Based Superalloy Manufactured by Laser Powder Bed Fusion

Number of pages: 32 Posted: 05 Feb 2023
ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, Chinese Academy of Sciences (CAS) - Institute of Metal Research, affiliation not provided to SSRN and ShanghaiTech University
Downloads 78 (816,709)

Abstract:

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Laser powder bed fusion (L-PBF), IN738LC superalloy, High preheating, Texture, Anisotropic tensile properties

Fracture Toughness Enhancement of a Laser Powder Bed Fusion Manufactured Ti-55511 Alloy with a Heat-Treatment-Tailored Hierarchical Microstructure

Number of pages: 20 Posted: 03 Feb 2025
ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, Chinese Academy of Sciences (CAS) - Institute of Metal Research, ShanghaiTech University and ShanghaiTech University
Downloads 36 (1,267,060)

Abstract:

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laser powder bed fusion (LPBF), Ti-55511 alloy, fracture toughness, isotropic mechanical properties, hierarchical microstructure

Fracture Toughness Enhancement of a Laser Powder Bed Fusion Manufactured Ti-55511 Alloy with a Heat-Treatment-Tailored Hierarchical Microstructure

Number of pages: 27 Posted: 17 Mar 2025
ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University and Chinese Academy of Sciences (CAS) - Institute of Metal Research
Downloads 32 (1,371,100)

Abstract:

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Laser powder bed fusion (LPBF), Ti-55511 alloy, Fracture Toughness, isotropic mechanical properties, hierarchical microstructure

4.

Multi-Step Debinding to Prevent Cracking in Ceramic Bodies Produced by Vat Photopolymerization

Number of pages: 27 Posted: 24 Apr 2024
ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, affiliation not provided to SSRN, affiliation not provided to SSRN and ShanghaiTech University
Downloads 61 (951,658)

Abstract:

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vat photopolymerization, Thermal debinding, Thermogravimetric analysis, Cracking formation control, Multi-step debinding process

5.

Influence of Hatch Spacing On Thermal Stress of Multi-Track Melt Pool During Additive Manufacturing Of Ti-6al-2zr-1mo-1v Alloy

Number of pages: 27 Posted: 26 May 2023
ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, Chinese Academy of Sciences (CAS) - Institute of Metal Research and ShanghaiTech University
Downloads 38 (1,222,651)

Abstract:

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selective laser melting, Multi-track molten pool, Computational fluid dynamics, Finite Element Method, Thermodynamics and thermal stress

6.

Tailoring Anisotropic Properties of Silicon Nitride Ceramics through Vat Photopolymerization: The Impact of Sintering Temperature on Strength and Thermal Conductivity

Number of pages: 39 Posted: 05 Nov 2025
ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, affiliation not provided to SSRN, ShanghaiTech University, affiliation not provided to SSRN and ShanghaiTech University
Downloads 27 (1,372,601)

Abstract:

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Vat Photopolymerization, silicon nitride, flexural strength, thermal conductivity, orientation dependency

7.

Annealed-Induced Improvement in Thermal Conductivity of Si3n4 Specimens Produced by Vat Photopolymerization: A Comparative Study of Vat Photopolymerization and Cold Isostatic Pressing

Number of pages: 29 Posted: 20 Aug 2024
ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, Chinese Academy of Sciences (CAS) - Institute of Metal Research, ShanghaiTech University and affiliation not provided to SSRN
Downloads 21 (1,436,435)
Citation 2

Abstract:

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Vat photopolymerization, Cold isostatic pressing, thermal conductivity, Annealing, Sintering process

8.

Achieving Equiaxed Grain Microstructure and Isotropic Properties in Titanium Thin-Walled Components by Laser-Directed Energy Deposition

Number of pages: 27 Posted: 14 Feb 2025
ShanghaiTech University, affiliation not provided to SSRN, ShanghaiTech University, ShanghaiTech University, Chinese Academy of Sciences (CAS) - Institute of Metal Research, ShanghaiTech University, ShanghaiTech University, Chinese Academy of Sciences (CAS) - Institute of Metal Research, ShanghaiTech University and Chinese Academy of Sciences (CAS) - Institute of Metal Research
Downloads 15 (1,500,778)

Abstract:

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Laser-directed energy deposition, thin-walled components, titanium alloys, isotropic mechanical properties, trajectory planning

9.

Suppression of the Leading-Edge Bulge Effect in Ceramic Vat Photopolymerization via Yield Stress Regulation for Enhanced Silicon Nitride Performance

Number of pages: 28 Posted: 30 Aug 2025
ShanghaiTech University, ShanghaiTech University, ShanghaiTech University, affiliation not provided to SSRN, ShanghaiTech University, affiliation not provided to SSRN, ShanghaiTech University and Chinese Academy of Sciences (CAS) - Institute of Metal Research
Downloads 14 (1,518,554)

Abstract:

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vat photopolymerization, leading-edge bulge, yield stress, thickener agent