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Volume 31 Issue 3
Jun.  2010
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JIANG Wen-chun, GONG Jian-ming, TU Shan-dong. Effect of Brazing Temperature on Tensile Strength and Microstructure for 304 Stainless Steel Plate-Fin Structure[J]. Nuclear Power Engineering, 2010, 31(3): 118-121.
Citation: JIANG Wen-chun, GONG Jian-ming, TU Shan-dong. Effect of Brazing Temperature on Tensile Strength and Microstructure for 304 Stainless Steel Plate-Fin Structure[J]. Nuclear Power Engineering, 2010, 31(3): 118-121.

Effect of Brazing Temperature on Tensile Strength and Microstructure for 304 Stainless Steel Plate-Fin Structure

  • Received Date: 2009-03-31
  • Rev Recd Date: 2010-03-12
  • Available Online: 2025-07-29
  • Publish Date: 2010-06-01
  • The vacuum brazing of 304 stainless steel plate fin structure was carried out,and the tensile tests were performed.The scanning electron microscope(SEM) and Energy-dispersive X-ray spectrometer(EDS)tests were carried out to reveal the microstructure and chemical components in the brazed joint.The effect of brazing temperature on tensile strength and microstructure for 304 stainless steel plate-fin structures was discussed.The results show that the tensile strength is increased with the brazing temperature increasing from 1025 to 1100℃.With the brazing temperature increasing,the boron is diffused more adequately,which increases the strength.The microstructure becomes more uniform with the brazing temperature increasing.Hence the brazing temperature is determined at 1100℃.When the brazing temperature is very low(1030℃),more brittle phases are generated in the brazing joint,which decreases the strength.When the brazing temperature is increased to 1100℃,full solid solution is generated in the middle of joint,and the microstructure in the fillet becomes more uniform.

     

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