Topic
Spray forming
About: Spray forming is a research topic. Over the lifetime, 1153 publications have been published within this topic receiving 12869 citations. The topic is also known as: spray casting & spray deposition.
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TL;DR: In this article, a three-dimensional heat transfer model of spray-formed tubes, based on the 3D shape model presented in the first part of this study, has been established, by means of which, evolution of temperature field, cooling and solidification behaviors of a growing tubular deposit have been investigated.
22 citations
TL;DR: In this article, a heat transfer model of a growing billet was established to investigate the thermal profiles of the billet during spray forming, and an apparent correlation between the cooling and solidification condition of the deposit and its metallurgical properties has been disclosed by means of numerical simulation and experiment.
22 citations
TL;DR: In this article, the effect of spray forming on the structure and properties of a 17% Cr, 2.5% C white cast iron is described and compared with conventionally cast material of the same composition.
Abstract: The effect of spray forming on the structure and properties of a 17% Cr, 2.5% C white cast iron is described and compared with conventionally cast material of the same composition. Spray forming resulted in a substantial reduction in microstructural scale (eutectic (Cr,Fe)7C3 fields of up to 500 μm in conventionally cast material were replaced by discrete carbides of typically 2–8 μm diameter in the spray cast deposit). Carbide size varied as a function of position in the spray deposit, being approximately twice the size at mid section compared with either surface or interface with the collector. Carbide size was not altered by the gas to metal ratio used to atomise the spray. Spray forming increased transverse rupture stress and work of fracture by ∼50% compared with the conventionally cast material. Forging of the spray formed material was possible at ∼950°C, without inducing carbide fracture or void formation in the matrix. Quenching into iced water from 300°C induced extensive macroscopic cracking in the conventionally cast material whereas 400°C was required in the spray cast material to induce similar damage. The relationship between processing, microstructure and mechanical properties is discussed.
22 citations
TL;DR: In this article, a unified model for simulating the spray forming process has been developed, which involves coupling of three sub models for the atomization, the deposition and the shape of the billet.
22 citations