Lecture

Thermophysical Properties: Metallurgical Insights

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Description

This lecture delves into thermophysical properties of materials, focusing on Vegard's law, deviations in lattice parameters, and the use of density measurements in metallurgy. It explores the impact of alloying elements on lattice parameters and the significance of solid solubility for boron in palladium. The discussion extends to the evaluation of solid solubility through electrical conductivity and density measurements, with examples from binary systems like Ag-Ge. The lecture also covers the challenges in achieving equilibrium distribution in metal matrix composites through density measurements, emphasizing the importance of particle size and strain. Throughout the lecture, practical applications and implications of these properties in metallurgy are highlighted.

Official source

Related concepts (15)

Metallurgy

Metallurgy is a domain of materials science and engineering that studies the physical and chemical behavior of metallic elements, their inter-metallic compounds, and their mixtures, which are known as alloys. Metallurgy encompasses both the science and the technology of metals; that is, the way in which science is applied to the production of metals, and the engineering of metal components used in products for both consumers and manufacturers. Metallurgy is distinct from the craft of metalworking.

Alloy steel

Alloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low alloy steels and high alloy steels. The difference between the two is disputed. Smith and Hashemi define the difference at 4.0%, while Degarmo, et al., define it at 8.0%. Most commonly, the phrase "alloy steel" refers to low-alloy steels. Strictly speaking, every steel is an alloy, but not all steels are called "alloy steels".

Aluminium alloy

An aluminium alloy (or aluminum alloy; see spelling differences) is an alloy in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin, nickel and zinc. There are two principal classifications, namely casting alloys and wrought alloys, both of which are further subdivided into the categories heat-treatable and non-heat-treatable. About 85% of aluminium is used for wrought products, for example rolled plate, foils and extrusions.

Ferrous metallurgy

Ferrous metallurgy is the metallurgy of iron and its alloys. The earliest surviving prehistoric iron artifacts, from the 4th millennium BC in Egypt, were made from meteoritic iron-nickel. It is not known when or where the smelting of iron from ores began, but by the end of the 2nd millennium BC iron was being produced from iron ores in the region from Greece to India, and sub-Saharan Africa. The use of wrought iron (worked iron) was known by the 1st millennium BC, and its spread defined the Iron Age.

Powder metallurgy

Powder metallurgy (PM) is a term covering a wide range of ways in which materials or components are made from metal powders. PM processes can reduce or eliminate the need for subtractive processes in manufacturing, lowering material losses and reducing the cost of the final product. Powder metallurgy is also used to make unique materials impossible to get from melting or forming in other ways. A very important product of this type is tungsten carbide.

Related lectures (50)

Metals: Phase Diagrams

Explores phase diagrams in metallurgy, emphasizing stable phases, microstructures, and alloying impact.

Metallurgy: Martensitic Transformation and TTT Diagrams

Discusses martensitic transformation in metals, focusing on TTT diagrams and the effects of cooling rates on phase formation.

Metallurgical Processes: Hardening and Maturation

Explores metallurgical hardening processes and microstructure evolution in metals and alloys through heat treatment.

Advanced Metallurgy: Ni- & Ti-alloys

Delves into the advanced metallurgy of nickel and titanium alloys, turbine blade design, and fatigue crack behavior.

Precious Metals: Properties and Applications