The foundations of a new approach to additive manufacturing: Characteristics of free space metal deposition

Rangesh, Abinand; O’Neill, W

doi:10.1016/j.jmatprotec.2011.09.005

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…Hussein et al (2013) have simulated the forming process of the overhanging structure with finite element method and proved that overhanging structure’s temperature gradient is larger than the non-overhanging structure; its scanning speed is in direct ratio with the length of the molten pool, whereas it is in inverse ratio with the width and depth of the pool. Rangesh and William (2012) have probed into the influencing factors to the overhanging structure in the forming process, and the results show that the temperature and time of the forming, overhanging structure size and scanning strategy can greatly affect the forming quality of the structure…”

Section: Introductionmentioning

confidence: 99%

Research on the microstructure and properties of the overhanging structure formed by selective laser melting

Sun

Yang

et al. 2017

RPJ

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Purpose This paper aims to analyze the different between matrix and overhanging structure and indicate the laws and mechanism of overhanging structure formed by selective laser melting (SLM). Design/methodology/approach This paper includes processing the matrix and overhanging structure with optimized parameters and analyzing the microstructure and properties of matrix and overhanging with OM, SEM, XRD etc. so as to analyze and reveal the laws and mechanism of overhanging structure formed by SLM. Findings The solidification of overhanging structure begins from the structure’s edge and extends to its center; the distribution of the Cr with a diameter of 250 nm in the Fe matrix is uniform; the grain in the overhanging structure is growing faster than the grain in the matrix. The overhanging structure mainly composed by austenite has no apparent layer. Moreover, the microhardness of the overhanging structure is 258.6-294.0 Hv0.3, smaller than the microhardness of the matrix which is 236.4-300.9 Hv0.3. Originality/value This paper clarifies how to manufacture overhanging structure and non-overhanging structure matrix with optimized parameters, analyzes the microstructures and compares the properties of both overhanging structure and non-overhanging structure “matrix”, so as to analyze the reasons for the forming of the overhanging structure, which in turn lauds basic data foundation for the theoretical studies in the future.

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Section: Introductionmentioning

confidence: 99%

Research on the microstructure and properties of the overhanging structure formed by selective laser melting

Sun

Yang

et al. 2017

RPJ

View full text Add to dashboard Cite

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“…With the unique capacity of fabricating metallic components without using the mold, LSF provides the availability to build the geometrically complex components with the materials that are difficult to fabricate by traditional processing technology [4,5]. Additionally, owing to the good metallurgical bonding among the deposited tracks and layers and the fine near-rapid solidification microstructure in the deposit, the excellent strength, plasticity and corrosion resistance can be achieved in LSFed parts.…”

Section: Introductionmentioning

confidence: 99%