Topic
Investment casting
About: Investment casting is a research topic. Over the lifetime, 2290 publications have been published within this topic receiving 18689 citations.
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TL;DR: In this paper, the authors compare the mechanical properties of cast and wrought Ni3Al-based alloys, Fe3Al based alloys and FeAl alloys with several commercially available superalloys such as Haynes 214 (NiCrAlY), MA-956 (yttriadispersed FeCrAly), and a FeNiCr alloy (HU steel) used in carburizing applications.
663 citations
TL;DR: In this article, the authors present a review of various investigations made by researchers in different stages of investment casting and highlight their importance, such as pattern wax properties, effects of blending, additives and fillers.
307 citations
TL;DR: In this paper, the feasibility and dimensional accuracy of two rapid casting (RC) solutions based on 3D printing technology were evaluated, namely investment casting starting from 3D printed starch patterns and the ZCast process for the production of cavities for light-alloys castings.
Abstract: Purpose – The purpose of this paper is to verify the feasibility and evaluate the dimensional accuracy of two rapid casting (RC) solutions based on 3D printing technology: investment casting starting from 3D‐printed starch patterns and the ZCast process for the production of cavities for light‐alloys castings.Design/methodology/approach – Starting from the identification and design of a benchmark, technological prototypes were produced with the two RC processes. Measurements on a coordinate measuring machine allowed calculating the dimensional tolerances of the proposed technological chains. The predictive performances of computer aided engineering (CAE) software were verified when applied to the ZCast process modelling.Findings – The research proved that both the investigated RC solutions are effective in obtaining cast technological prototypes in short times and with low costs, with dimensional tolerances that are completely consistent with metal casting processes.Practical implications – The research a...
250 citations
TL;DR: In this article, the authors present a review of the state-of-the-art in the field of investment casting and explore possible methods for the improvement of shell performance, focusing on the mechanical and physical properties of the ceramic shell.
182 citations
TL;DR: In this paper, the truss cores are made by deformation shaping hexagonal perforated metal sheets and then bonded between thin facesheets using a transient liquid phase approach.
Abstract: Closed cell honeycomb core structures are widely used for sandwich panel construction. Periodic open cell tetrahedral truss core structures have recently been shown to possess weight specific properties that compete with those of honeycomb core designs. In contrast to honeycomb, the open cell topologies provide many opportunities for multifunctionality. Past approaches to miniature tetrahedral truss fabrication from metals have utilized investment casting routes. Material choices are then constrained by the need for high fluidity during casting. Strength knockdown due to casting defects has been observed. Here, we utilize a comparatively simple wrought metal based approach. The truss cores are made by deformation shaping hexagonal perforated metal sheets. They are then bonded between thin facesheets using a transient liquid phase approach. When designed to minimize bending of members within the core, a linear dependence of core modulus and strength upon relative density is anticipated. Core relative densities of less than two percent have been obtained. With this approach, low cost truss core structures can be made from a wide variety of heat-treatable wrought alloys. (Abstract Copyright [2002], Wiley Periodicals, Inc.)
176 citations