Effect of solution treatment and aging on microstructure and tensile properties of high strength β titanium alloy, Ti-5Al-5V-5Mo-3Cr
Effect of solution treatment and aging on microstructure and tensile properties of high strength β titanium alloy, Ti-5Al-5V-5Mo-3Cr
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DOI：
10.1016/j.matdes.2014.04.015
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发表时间：
2015-02-05
影响因子：
8.4
通讯作者：
Bhattacharjee, Amit
中科院分区：
文献类型：
--
作者：
Shekhar, Shashi;Sarkar, Rajdeep;Bhattacharjee, Amit
Ti-5Al-5V-5 Mo-3Cr是最新的高强度β钛合金之一，可替代Ti-10 V-2Fe-3Al用于飞机结构中的较大尺寸部件。在本研究中，一个双VAR熔化锭进行热机械加工，它的显微组织和拉伸性能作为B以及α + β固溶处理和时效的函数确定。B固溶处理和时效导致更高的强度，而α + β固溶处理和时效导致强度和延展性的最佳组合。研究了该合金的时效行为随时间和温度的变化规律，并记录了拉伸试样的显微组织和断口形貌。这项系统的研究应有助于进一步模拟其力学行为。(C)2014爱思唯尔有限公司版权所有。
Ti-5Al-5V-5Mo-3Cr is one of the latest high strength beta titanium alloys to be used for larger size components in aircraft structures replacing Ti-10V-2Fe-3Al. In the present study, a double VAR melted ingot was thermo-mechanically processed and it's microstructure and tensile properties determined as a function of b as well as alpha + beta solution treatment and aging. The b solution treatment and aging resulted in higher strength and alpha + beta solution treatment and aging resulted in an optimum combination of strength and ductility. Its aging behavior was studied as a function of time and temperature and corresponding microstructure as well as fractographs of tensile tested specimens were recorded. This systematic study should help in further modeling its mechanical behavior. (C) 2014 Elsevier Ltd. All rights reserved.