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Abstract

Materials are selected and used as a result of a match between their properties and the needs dictated by the intended application. This article provides information on how composition and structure determine the properties of materials. It presents common structural elements that are most important in materials. The article provides the historical perspective of materials and illustrates the evolution of engineering materials.

Abstract

This article focuses on the relationships among material properties and material structure. It summarizes the fundamental characteristics of metals, ceramics, and polymers. The article provides information on crystal structure, atomic coordination, and crystalline defects. It discusses the relationships among microstructure and mechanical properties, and the relevance of the properties to design. The article describes the common means for increasing low-temperature strength and presents an example that shows structure-property relationships in nickel-base superalloys for high-temperature applications. The relationships of microstructure with low-temperature fracture, high-temperature fracture, and fatigue failure are also discussed.

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Richard W. Heckel, Effects of Composition, Processing, and Structure on Materials Properties, Materials Selection and Design, Vol 20, ASM Handbook, Edited By George E. Dieter, ASM International, 1997

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