•Copper beryllium alloys •Copper nickel alloys Lecture 4 TapanyUdomphol. Suranaree University of Technology May-Aug 2007 Objectives Copper-oxygen phase diagram •Wrought coppers are classified according to oxygen and impurity contents.
The assessment of Hansen et al. , shows a phase diagram version which has been widely accepted until today. Later, up to the early 1990s a wide range of X-ray studies was performed, investigating different sections and phases of the phase diagram , , , , .
Beryllium Copper also is known as Beryllium Bronze or Spring Copper. It's a copper alloy that includes between 0.5 percent and 3 percent Beryllium, as well as other elements. Beryllium is a gray, strong, lightweight metalloid (an element that has properties in common with both metals and nonmetals).
The melting point of an alloy of two (binary) or more metals depends on the relative proportions of the ingredients. an eutectic mixture is the mixture where the melting point is as low as possible; Binary eutectic Copper - Cu - alloys, with composition and melting points are indicated below:
The high strength of the copper beryllium alloys is attained by age hardening or precipitation hardening. The age or precipitation hardening results from the precipitation of a beryllium containing phase from a supersaturated solid solution of mostly pure copper.
(d) Beryllium bronzes (e) Phosphor bronzes . 3. Cupronickels: These are alloys of copper and nickel. Cu-Ni phase diagram shows complete solid solubility. 4. Nickel Silvers: These are copper, nickel and zinc alloys, also called German silver. Heat Treatment Processes for Copper Alloys: Copper alloys are given the following heat treatment: