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Posted on: Friday, February 05, 2010 11:42 PM
Author: Scribd Feed
Subject: 6253422 Material Science Notes
| Chapter 1. INRODUCTION 1 .1 Historical Perspective Materials are so important in the development of civilization that we associate Ages with them. In the origin of human life on Earth, the Stone Age, people used only natural materials, like stone, clay, skins, and wood. When people found copper and how to make it harder by alloying, the Bronze Age started about 3000 BC. The use of iron and steel, a stronger material that gave advantage in wars started at about 1200 BC. The next big step was the discovery of a cheap process to make steel around 1850, which enabled the railroads and the building |
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