Читать книгу Engineering Physics of High-Temperature Materials - Nirmal K. Sinha - Страница 76

The field of mechanical metallurgy deals with the behavior and response of metals and alloys to applied forces. This specific area within metallurgy delves into the structural responses to mechanical processes, including rolling, extruding, deep drawing, and bending. Dieter (1961) presented an excellent introductory textbook on mechanical metallurgy as part of the metallurgy and metallurgical engineering series.

Mechanical metallurgy is important because the structural response to mechanical forces can cause a huge impact on macroscopic properties. Processes, such as rolling and extruding, can impart strong texture within a polycrystalline material. This preferred orientation can lead to anisotropic properties on the macroscale. Understanding the effects of forming processes on final component properties is increasingly being recognized as a tool to obtain properties of interest, as well as avoiding unwanted impacts.

When dealing with alloys at high temperatures, an additional point to consider is the definition of the melting point. For pure elements, T _m can be determined precisely, but complications arise for engineering materials with complex compositions for which the melting point cannot be defined well. For metallic alloys, liquidous point – the temperature at which an alloy is completely melted – is convenient to use.