Effects of external stresses on hot corrosion behavior of stainless steel TP347HFG

被引：25
作者：
Fu, Jiapeng [1 ]
Zhou, Qulan [1 ]
Li, Na [1 ]
Liu, Zhuhan [1 ]
Liu, Taisheng [2 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China
[2] Dongfang Boiler Grp Corp Ltd, Zigong 643000, Peoples R China
来源：
CORROSION SCIENCE | 2016年 / 104卷
关键词：
Molten salts; Stainless steel; SEM; XRD; Effects of strain; Hot corrosion; HIGH-TEMPERATURE CORROSION; SUPERCRITICAL CARBON-DIOXIDE; COAL POWER-PLANTS; ALLOYS; SUPERALLOY; ATMOSPHERE; OXIDATION; SALTS; WATER;
D O I：
10.1016/j.corsci.2015.11.037
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hot corrosion experiments of alloy TP347HFG under different stresses were conducted. Corroded specimens were examined by means of corrosion products, morphology and compositional changes in corrosion scales. The corrosion behavior was strongly associated with the formation of oxides layers. The corrosion resistance was strengthened by the external stress. It seemed that the exertion of stresses caused many micro cracks and defects, which acted as faster and easier diffusion paths for Cr atoms to diffuse to the surface, and thus, promote faster formation of the protective Cr2O3 oxide layer. Critical stress 40 MPa was found, specimens under which present the best resistance. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：103 / 111
页数：9
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