Glossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘V’ Vacancy – It is a structural imperfection in which an individual atom site is temporarily unoccupied. Vacancies – It refers to several lattice sites which are unoccupied. The number of vacancies increases exponentially with temperature. In the equilibrium state, e.g., …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘U’ U-bend die – It is a die, normally used in press-brake forming, which is machined horizontally with a square or rectangular cross-sectional opening that provides two edges over which metal is drawn into a channel shape. U-bend stress corrosion test …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘T’ Taber abraser – It is a specialized piece of equipment that which uses rotating abrasive wheels to abrade a material sample under controlled conditions. Taber abraser index – It is a measurement used to quantify a material’s resistance to abrasion, …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘S’ Sach’s method – It is a technique for the measurement of axisymmetric residual stresses from the analysis of strain relaxations during the incremental removal of layers of material from an axisymmetric component. Sachsse-Bartholome process – It is also known …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘R’ R2P2 – It means ‘reducing risks protecting people’. It is a document which describes the decision-making process of the health, safety and environment. It aims to make the procedures and protocols which the health, safety and environment follows transparent so …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘Q’ Q-BOP process – It is also known as OBM process. Oxygen in this process is injected into the bath through tuyeres inserted in the bottom of the furnace. Each tuyere is made from two concentric tubes forming an inner nozzle …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘P’ Package – It is a bundle of things packed and wrapped. In case of composites, package consists of yarn, roving, and so on in the form of units capable of being unwound and suitable for handling, storing, shipping, and use. Packaged …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘O’ Objective – It is an optical element that gathers light from an object being observed and focuses the light rays from it to produce a real image of the object. Objectives can be a single lens or mirror, or combinations of several optical elements. They are used in microscopes, binoculars, …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘N’ Nabarro–Herring creep (NH creep) – It is a mechanism of deformation of crystalline materials (and amorphous materials) which occurs at low stresses and held at high temperatures in fine-grained materials. In Nabarro–Herring creep, atoms diffuse through the crystals, and the rate of creep varies inversely with the …
Read MoreGlossary of technical terms for the use of metallurgical engineers Terms starting with alphabet ‘M’ Maceral -It is a component, organic in origin, of coal or oil shale. The term ‘maceral’ in reference to coal is analogous to the use of the term ‘mineral’ in reference to igneous or metamorphic rocks. Examples of macerals are inertinite, vitrinite, and liptinite. Maceral analysis – Maceral analysis is important …
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