材料科學(xué)與工程基礎(chǔ)1-展示頁
2025-01-06 21:01本頁面
【正文】 some crystalline materials consist of many crystals or grains. SEM 5 nm MSE XRD, TEM Optical 19 ? transparency 透明度 : 氧化 鋁 因其 結(jié)構(gòu) 不同而透 明 、 半 透明、不透明 Adapted from Fig. , Callister 7e. (Specimen preparation, . Lessing。 Malleability (formability) Strengthtoweight ratio is the strength of a material divided by its density。 Weight。Fundamentals of materials science and engineering Chapter 1 Introduction to Materials Science and Engineering Have You Ever Wondered? What do materials scientists and engineers study? How sheet steel can be processed to produce a highstrength， lightweight， energy absorbing， malleable（可塑的，可鍛的） material used in the manufacture of car chassis（底盤） ? Can we make flexible and lightweight electronic circuits using plastics? What is a “ smart material” ? outline ? What is Materials Science and Engineering? ? Classification of Materials ? Environmental and Other Effects ? Materials Design and Selection 11 What is Materials Science and Engineering? ? 1. Definition Materials Science and Engineering (MSE) is an interdisciplinary field concerned with inventing new materials and improving previously known materials by developing a deeper understanding of the microstructurepositionsynthesisprocessing relationship. ▲ The term Composition Means the chemical makeup of a material ▲ Structure A description of the arrangement of atoms , as seen at different levels of detail. ▲ Synthesis Refers to how materials are made from naturally occuring or manmade chemicals. ▲ Processing Means how materials are shaped into useful ponents to cause changes in the properties of different materials. Figure Application of the tetrahedron of materials science and engineering to sheet steels for automotive chassis. Note that the microstructuresynthesis and processingposition are all interconnected and affect the performancetocost ratio Composition。 Strength。 Energy absorption properties。 materials with a high strengthtoweight ratio are strong but lightweight. Figure Application of the tetrahedron of materials science and engineering to semiconducting polymers for microelectronics. [r?u′b?st] 結(jié)實的；耐用的；堅固的
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