中国激光, 2018, 45 (7): 0702007, 网络出版: 2018-09-11
激光增材制造Ti60A钛合金的氧化行为 下载: 1420次
Oxidation Behaviors of Ti60A Titanium Alloy Processed by Laser Additive Manufacturing
激光技术 激光增材制造 氧化温度 氧化性能 Ti60A laser technique laser additive manufacturing oxidation temperature oxidation performance Ti60A
摘要
利用激光增材制造技术制备了沉积态和锻态Ti60A钛合金,并在600~800 ℃温度下进行了氧化实验,研究了不同氧化条件下试样的增重量及显微硬度的变化规律。结果表明,沉积态和锻态Ti60A合金的表面氧化产物主要由TiO2和Al2O3构成,氧化层的生成是由氧向基体内扩散与Al和Ti元素向外扩散的共同作用所致;在相同的实验条件下,与锻态的相比,沉积态Ti60A合金氧化增重量更小,表面氧化层更致密,厚度更小,氧元素的扩散深度更小,高温抗氧化性能更好。
Abstract
The as-deposited and as-forged Ti60A titanium alloys are fabricated by the laser additive manufacturing technique, and the oxidation experiment under the temperature of 600-800 ℃ is conducted. The change laws of the weight increase and the microhardnesses of samples under different oxidation conditions are investigated. The results show that, the surface oxidation products of the as-deposited and as-forged Ti60A alloys mainly consist of TiO2 and Al2O3. The formation of the oxidation layers is caused by the combined action of the inward diffusion of the oxygen into the matrix and the outward diffusion of Al and Ti elements. Under the same experimental conditions, compared with those of the as-forged alloy, the weight increase of the as-deposited Ti60A alloy is smaller, the surface oxidation layer is thinner and denser, the diffusion depth of oxygen element is smaller, and the high-temperature oxidation resistance property is much better.
刘金, 王薇茜, 程序, 汤海波. 激光增材制造Ti60A钛合金的氧化行为[J]. 中国激光, 2018, 45(7): 0702007. Jin Liu, Weixi Wang, Xu Cheng, Haibo Tang. Oxidation Behaviors of Ti60A Titanium Alloy Processed by Laser Additive Manufacturing[J]. Chinese Journal of Lasers, 2018, 45(7): 0702007.