Metals- Chp6

These flashcards cover key concepts related to metals, including definitions of terms, processes, and materials involved in metallurgy.

Alloy

A mixture of two or more elements, where at least one is a metal, that has metallic properties.

Phase Diagram

A graphical representation showing the phases present in a material at different temperatures and pressures.

Blast Furnace Process

A method for smelting iron ore to produce pig iron, involving layers of iron-bearing materials, fuel, and flux.

Pig Iron

An intermediate product of smelting iron ore, used as a primary raw material for steelmaking.

Coke

A fuel derived from coal used in the blast furnace to smelt iron ore, providing heat and a reducing agent.

Flux

A material added to the blast furnace to help remove impurities from the metal, typically limestone or dolomite.

Direct Reduction of Iron (DRI)

A process that converts iron ore directly into iron using reducing gases, often derived from natural gas or low-grade coal.

Electric Furnace Steel Making

A steel-making process that primarily uses scrap metal and graphite electrodes, efficient for producing high-quality steel.

Basic Oxygen Furnace (BOF)

A steel-making process that combines molten iron with scrap and oxygen to regulate the carbon content.

Killed Steels

Steel that has been deoxidized to prevent gas evolution during solidification, resulting in a cleaner steel product.

Rimming Steels

Steels with little or no deoxidation that evolve gas during solidification, leading to a honeycomb structure.

Stainless Steel

A corrosion-resistant alloy typically containing chromium, classified into ferritic, martensitic, and austenitic types.

Bauxite

The primary ore of aluminum, consisting of hydrated aluminum oxides and various impurities.

Cryolite

A mineral used in aluminum production as a solvent for aluminum oxide in the electrolytic process.

Copper Alloys

Metallic materials made by combining copper with other elements to enhance strength, corrosion resistance, or machinability.

Blister Copper

Copper that contains impurities and is produced in the smelting process, typically with a purity of 98-99%.