摘要
Since the Bronze Age to the early 21st century,development of metals and alloys have been limited to one principal element with minor addition of relatively small amounts of other elements,such as steels,titanium alloys,aluminum alloys,and so on.Although a dozen of other elements may be added,conventional alloys
Since the Bronze Age to the early 21st century, development of metals and alloys have been limited to one principal element with minor addition of relatively small amounts of other elements, such as steels, titanium alloys, aluminum alloys, and so on. Although a dozen of other elements may be added, conventional alloys usually have a major atomic fraction of the base element. This approach optimizes the overall properties while retaining the characteristics of the base element, making the alloy family tempting.
