Copper-beryllium alloy with high strength

• Main Authors: TYSON MICHAEL F, GEDEON MICHAEL J, HOYER JEFFREY S, ZIEGLER KARL R, GATEHOUSE JOHN E, SCHMECK BRUCE D, GRENSING FRITZ
• Format: Patent
• Language: Chinese; English
• Published: 14.12.2021
• Subjects: ALLOYS; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to a method for producing a copper-beryllium alloy product. The method comprises preparing a base alloy having 0.15 wt% - 4.0 wt% beryllium and having grains and an initial cross section area. The method further comprises cold working the base alloy to a percentage of cold reduction of area (CRA) greater than 40%, based on the initial cross section area, and heat treating the cold worked alloy to produce the copper-beryllium alloy product. The grain structure of the copper-beryllium alloy product has an orientation angle of less than 45 degrees when viewed along the direction of the cold working. The copper-beryllium alloy product demonstrates a fatigue strength of at least 385 MPa after 106 cycles of testing. 本发明涉及一种用于生产铜铍合金产品的方法。该方法包括：制备具有0.15wt％-4.0wt％的铍且具有晶粒和初始横截面积的基础合金。该方法还包括将基础合金冷加工至基于初始横截面积的面积冷缩(CRA)百分比大于40％，以及对冷加工后的合金进行热处理，以生产铜铍合金产品。当沿着冷加工的方向观察时，铜铍合金产品的晶粒结构相对于冷加工面的取向角小于45°。该铜铍合金产品在经过106个测试循环后表现出至少385MPa的疲劳强度。