Delayed cracking behavior of a meta-stable austenitic stainless steel under bending condition

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Jinshan He
  • Xiaofei Guo
  • Junhe Lian

  • Sebastian Münstermann
  • Wolfgang Bleck

Organisaatiot

  • University of Science and Technology Beijing
  • RWTH Aachen University
  • Massachusetts Institute of Technology

Kuvaus

The delayed cracking behavior of a meta-stable austenitic stainless steel AISI 301 under bending condition has been investigated at different temperatures, hydrogen contents and external holding forces. The results reveal that the investigated material with an initial hydrogen content of 1 ppm has good bendability at the temperature range between -20 °C and room temperature, which is not susceptible to delayed cracking in atmospheric condition. When the material is pre-charged with 50 ppm hydrogen, the material still shows good bendability. However, it is susceptible to delayed cracking under an external holding force during interrupted bending test. By the measurement of martensitic transformation, the simulation of the stress/strain distributions in the bending specimens and the characterization of fracture surfaces, the effects of hydrogen, stress state and external holding force on delayed cracking behavior have been assessed.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli138470
Sivumäärä16
JulkaisuMATERIALS SCIENCE AND ENGINEERING A: STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Vuosikerta768
Varhainen verkossa julkaisun päivämäärä28 syyskuuta 2019
TilaSähköinen julkaisu (e-pub) ennen painettua julkistusta - 28 syyskuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 37327454