The invention discloses a preparation method of an easy-for-turning Be-Cu
alloy resistant to high-temperature
softening and
stress relaxation. The easy-for-turning Be-Cu
alloy comprises 0.2-2.1 wt.% of Be, 0.1-0.7 wt.% of Te, more than 0.2 wt.% of Co and Ni, less than 0.7 wt.% of Co, Ni and Fe, no more than 4 wt.% of the sum of
impurity elements, and the balance Cu. The preparation method comprises the following steps: a, carrying out blending, feeding,
smelting and spray deposition according to the weight percentage, so as to obtain an
ingot blank; and b, subjecting the
ingot blank obtained in the step a to homogenizing heat treatment, hot
machining technology, cold working technology as well as annealing,
solid solution and aging heat treatment, so as to obtain the easy-turning Be-Cu
alloy. Compared with that of a traditional high-Be Be-Cu alloy, the high-temperature
softening temperature point of the the easy-for-turning Be-Cu alloy is improved by 75 DEG C + / - 10 DEG C; compared with that of a traditional low-Be Be-Cu alloy, the high-temperature
softening temperature point of the the easy-for-turning Be-Cu alloy is improved by 90 DEG C + / - 10 DEG C; compared with that of a traditional Be-Cu alloy, the
stress relaxation resistance of the easy-for-turning Be-Cu alloy is improved by 30%; and the Be-Cu material application working condition range is enlarged.