• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 26 Issue 3
Jun.  2013
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Article Contents
JIANG Chao, CHEN Hui, WANG Xiaoming, MA Jijun, LI Hengkui. Stress Corrosion Behavior of Car-Body Aluminum Alloy for High Speed Train[J]. Journal of Southwest Jiaotong University, 2013, 26(3): 500-506. doi: 10.3969/j.issn.0258-2724.2013.03.017
Citation: JIANG Chao, CHEN Hui, WANG Xiaoming, MA Jijun, LI Hengkui. Stress Corrosion Behavior of Car-Body Aluminum Alloy for High Speed Train[J]. Journal of Southwest Jiaotong University, 2013, 26(3): 500-506. doi: 10.3969/j.issn.0258-2724.2013.03.017

Stress Corrosion Behavior of Car-Body Aluminum Alloy for High Speed Train

doi: 10.3969/j.issn.0258-2724.2013.03.017
  • Received Date: 12 Jun 2012
  • Publish Date: 25 Jun 2013
  • In order to ensure the safety and reliability of the series 5,6 and 7 aluminum alloy components of high-speed trains, specimens were tested using constant loading technique and constant displacement technique for the stress corrosion cracking. Mechanical incisions and fatigue cracks were prefabricated on the samples, which were then tested by applying a constant load or constant displacement. Experimental results showed that the series 7N01P-T4 alloy, with a critical stress intensity factor KⅠSCC of less than 11.238 MPa·m1/2  and a limit stress of less than 224.3 MPa, underperforms the series of 5083P-H111 and 6005A-T6 in the stress corrosion resistance, but the three series of aluminum alloy all met the requirements. Typical characteristics of stress corrosion caused by hydrogen embitterment of catholic reaction were found near the crack source region, but the characteristics of hydrogen-induced cracking were found near the fatigue region, which was consistent with the distribution of straight-line trenches on the fracture.

     

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