Hot corrosion behavior of TC11 titanium alloy treated by laser shock processing
Hot corrosion behavior of TC11 titanium alloy treated by laser shock processing
复制标题
激光冲击加工TC11钛合金的热腐蚀行为
DOI：
10.1016/j.apsusc.2013.07.017
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发表时间：
2013-10
影响因子：
6.7
通讯作者：
Chen, Kangmin
中科院分区：
文献类型：
--
作者：
Xue, Qing;Liu, Haixia;Chen, Ruifang;Chen, Kangmin
本研究的目的是通过激光冲击处理提高TC11钛合金的耐热腐蚀性能。对试件进行全表面激光冲击处理。研究了含20%氯化钠盐沉积的Na2SO4在650℃、800℃和900℃空气中的耐热腐蚀性能。用透射电子显微镜、X射线衍射仪和扫描电子显微镜研究了LSP冲击对表面组织、残余应力和热腐蚀后组织的影响。结果表明，激光冲击处理可产生−为295 Mpa的残余压缩应力。LSP后的显微组织以大量孪晶和高度缠结致密的位错排列为特征。我们甚至观察到了纳米结晶。TC11钛合金经激光冲击处理后，表面残留了较多的保护性氧化膜，氧化膜主要由TiO2、Al_2O_3、MoO_3等组成，平均腐蚀速率比未处理合金降低了50%以上。
The aim of this research is to improve the hot corrosion resistance of TC11 titanium alloy by laser shock processing. Specimens were treated by laser shock processing on the whole surface. The hot corrosion resistance beneath Na2SO4containing 20 wt.% NaCl salt deposits at 650 °C, 800 °C and 900 °C in air was investigated. The effects of LSP impacts on surface microstructure, residual stress, and microstructure after hot corrosion were investigated by transmission electron microscope, X-ray diffraction technology, and scanning electron microscope. Results show that laser shock processing can induce −295 MPa compressive residual stresses. The microstructure after LSP was characterized by a high amount of twins and highly tangled and dense dislocation arrangements. We even observed nano-crystallization. More protective oxidation films were remained on the surface of laser shocked specimens after hot corrosion, and it mainly consists of TiO2, Al2O3, MoO3, etc. The average corrosion rate of TC11 titanium alloy treated by laser shock processing is more than 50% lower than that of the untreated alloy.
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影响因子：
6.7
作者：
Gomez-Rosas, G;Rubio-Gonzalez, C;Morales, M
通讯作者：
Morales, M
影响因子：
6.7
作者：
X. C. Zhang;Bo Xu;H. Wang;Y. X. Wu
通讯作者：
X. C. Zhang;Bo Xu;H. Wang;Y. X. Wu
影响因子：
6.7
作者：
Morales, M.;Porro, J. A.;Ocana, J. L.
通讯作者：
Ocana, J. L.
DOI：
--
发表时间：
2010
期刊：
--
影响因子：
--
作者：
S. R. Kumar;K. Gudimetla;P. Venkatachalam;B. Ravisankar
通讯作者：
S. R. Kumar;K. Gudimetla;P. Venkatachalam;B. Ravisankar
影响因子：
5
作者：
U. Sánchez-Santana;C. Rubio-González;G. Gómez-Rosas;J. Ocaña;C. Molpeceres;J. Porro;M. Morales
通讯作者：
U. Sánchez-Santana;C. Rubio-González;G. Gómez-Rosas;J. Ocaña;C. Molpeceres;J. Porro;M. Morales