Effect of pulsed gas tungsten arc welding on corrosion behavior of Ti–6Al–4V titanium alloy
Effect of pulsed gas tungsten arc welding on corrosion behavior of Ti–6Al–4V titanium alloy
复制标题
DOI：
10.1016/j.matdes.2007.06.009
复制
发表时间：
2008
影响因子：
8.4
通讯作者：
M. Balasubramanian;V. Jayabalan;V. Balasubramanian
中科院分区：
文献类型：
--
作者：
M. Balasubramanian;V. Jayabalan;V. Balasubramanian
由于高强度重量比、高韧性和优异的耐腐蚀性等性能的出色组合，使得钛合金对许多工业应用具有吸引力。文献中经常报道的脉冲电流焊接的优点包括细化熔合区晶粒尺寸等。因此，本研究试图研究脉冲电流钨极氩弧焊（GTA）焊接参数对Ti-6Al-4V钛合金腐蚀行为的影响。使用脉冲电流钨极氩弧焊来制造接头。为了优化要进行的实验的数量，使用了中心组合设计。研究表明，随着峰值电流和脉冲频率增加到最佳值，耐腐蚀性会增加，而超过该最佳点时，耐腐蚀性会降低。还发现耐腐蚀性随着晶粒细化而增加。
Due to the excellent combination of properties such as elevated strength-to-weight ratio, high toughness and excellent resistance to corrosion, make titanium alloys attractive for many industrial applications. Advantages of pulsed current welding frequently reported in literature include refinement of fusion zone grain size, etc. Hence, in this investigation an attempt has been made to study the effect of pulsed current Gas Tungsten Arc (GTA) welding parameters on corrosion behavior of Ti–6Al–4V titanium alloy. Pulsed current gas tungsten arc welding was used to fabricate the joints. To optimize the number of experiments to be performed, central composite design was used. The investigation revealed increase in corrosion resistance with increase in peak current and pulse frequency up to an optimum value of the same and decrease in corrosion resistance beyond that optimum point. An increase in corrosion resistance with grain refinement was also detected.