一种近β型钛合金的热处理响应

Response of Heat-Treatment on A Near-β Titanium Alloy

摘要:

研究了一种近β钛合金在不同热处理条件下的性能及显微组织。结果表明：该合金在不同的热处理工艺下可获得不同的强度、塑性匹配。合金在α+β区固溶后时效可获得强度在1200～1500 MPa之间的不同的强度级别，并且具有很好的塑性。合金的力学性能主要受初生α相的形态控制。该合金还具有一般近β钛合金的时效特征, 即随着时效温度的升高, 强度降低, 塑性升高

关键词:钛合金;热处理;显微组织;力学性能

Abstract:

Microstructure and properties of a near β titanium alloy after different heat treatments were studied. The results show that different match of strength and plasticity can be obtained by different heat treatments. After α+β solution and aging treatment, excellent strength (ultimate tensile strength of 1200-1500 MPa) and plasticity can be achieved. The mechanical property of the alloy is mainly controlled by the shape of primary α. The alloy also has the aging characteristics of common near-β titanium alloy, i.e. its strength decreases and plasticity increases with aging temperature rising

Key words:titanium alloy; heat-treatment; microstructure; mechanical property