caa a22 4500 386337527 CHVBK 20180307111738.0 cr unu---uuuuu 161130e198902 xx s 000 0 eng 10.1557/S0883769400063417 doi S0883769400063417 pii (NATIONALLICENCE)cambridge-10.1557/S0883769400063417 A Perspective on Welding Science [Elektronische Daten] Welding science is an interdisciplinary field involving metallurgy and materials science, heat, fluid, and mass transfer, and arc and plasma physics to name a few. Three areas of welding science have been the focus of much research the past few years as welding scientists attempt to understand the phenomena responsible for producing fusion welds with acceptable service properties. Broadly defined, these areas are: 1. physical and numerical modeling of the heat and fluid flow during fusion welding, 2. understanding the microstructural evolution during solidification and cooling of welds, and 3. welding of advanced materials. This short review will focus on these fusion welding research themes to provide the reader with a flavor of the work in progress at several major government, industry, and university laboratories. Much of both the experimental and theoretical studies that have advanced the understanding of fusion welding processes revolves around delineating the roles of mass, momentum, and energy transfer. The earliest models of fusion welding processes were analytical models of heat transfer by conduction. These models not only excluded much of the physics of the process, but assumed point or linear heat sources. Nevertheless, these models provided useful insight about the interplay between power and weld speed, particularly regarding weld pool shape. Also, although quantitative predictions of weld pool shape were generally inaccurate, predicted thermal contours and cooling rates away from the fusion zone were useful in understanding the extent of heat-affected zones. Copyright © Materials Research Society 1989 Cieslak M.J. Jellison J.L. MRS Bulletin Cambridge University Press 14/2(1989-02), 32-39 0883-7694 14:2<32 1989 14 MRS https://doi.org/10.1557/S0883769400063417 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/S0883769400063417 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cieslak M.J. NATIONALLICENCE 700 1- Jellison J.L. NATIONALLICENCE 773 0- MRS Bulletin Cambridge University Press 14/2(1989-02), 32-39 0883-7694 14:2<32 1989 14 MRS CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge