Acta Metallurgica Sinica (English Letters) ›› 2019, Vol. 32 ›› Issue (12): 1437-1448.DOI: 10.1007/s40195-019-00929-9

Special Issue: 2019年腐蚀专辑-1

• Orginal Article •     Next Articles

Effects of Temperature on Fretting Corrosion Between Alloy 690TT and 405 Stainless Steel in Pure Water

Xing-Chen Liu1,2, Hong-Liang Ming1(), Zhi-Ming Zhang1, Jian-Qiu Wang1, Li-Chen Tang3, Hao Qian3, Yong-Cheng Xie3, En-Hou Han1   

  1. 1 CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
    2 School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016,China
    3 Shanghai Nuclear Engineering Research and Design Institute Ltd. Co., Shanghai 200233, China
  • Received:2019-03-12 Revised:2019-04-08 Online:2019-12-10 Published:2019-11-25

Abstract:

In pressurized water reactor, fretting corrosion has become the main reason for the failure of 690TT heat exchanger tubes. The effect of temperature on the fretting corrosion behavior between 690TT tube and 405 stainless steel (SS) bar has been studied during 106 fretting cycles. The overall average coefficient of friction (COF) values descends with an increase in test temperature, while the width of worn scar becomes wider. The severest fretting corrosion happens when the test temperature is at 100 °C. The wear mechanism differs at different test temperatures, from adhesive wear at room temperature to abrasive wear and delamination at 100 °C, to abrasive wear at 200 °C. Deformation slips, high residual strain concentration, and micro-cracks are found which are disadvantageous for the further service performance of the tubes.

Key words: Alloy 690TT, 405 SS, Fretting corrosion, Temperature