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Mechanical properties and tensile deformation behavior of a reduced activated ferritic-martensitic (RAFM) steel at elevated temperatures

Journal Article


Abstract


  • Here the tensile behavior of a 9Cr-1.7W-0.1C reduced activated ferritic-martensitic steel over the temperature region from room temperature (RT) to 600 ��C was studied. The variation of the dislocation distribution under the interplay mechanism of dislocations with solute atoms and lath boundaries was found to be the main reason for the decreasing of plasticity in the intermediate temperature zone. Temperature and strain rate were confirmed to affect the interaction intensity of this dynamic strain aging (DSA) phenomenon on the tensile deformation behavior through changing the extent of dislocation pile-up on the lath boundaries. The variation of average rate of crack propagation in the fibrous region was determined to be related to the DSA effect on the dislocation mobility.

Publication Date


  • 2018

Citation


  • Mao, C., Liu, C., Yu, L., Li, H., & Liu, Y. (2018). Mechanical properties and tensile deformation behavior of a reduced activated ferritic-martensitic (RAFM) steel at elevated temperatures. Materials Science and Engineering A, 725, 283-289. doi:10.1016/j.msea.2018.03.119

Scopus Eid


  • 2-s2.0-85045413683

Start Page


  • 283

End Page


  • 289

Volume


  • 725

Issue


Place Of Publication


Abstract


  • Here the tensile behavior of a 9Cr-1.7W-0.1C reduced activated ferritic-martensitic steel over the temperature region from room temperature (RT) to 600 ��C was studied. The variation of the dislocation distribution under the interplay mechanism of dislocations with solute atoms and lath boundaries was found to be the main reason for the decreasing of plasticity in the intermediate temperature zone. Temperature and strain rate were confirmed to affect the interaction intensity of this dynamic strain aging (DSA) phenomenon on the tensile deformation behavior through changing the extent of dislocation pile-up on the lath boundaries. The variation of average rate of crack propagation in the fibrous region was determined to be related to the DSA effect on the dislocation mobility.

Publication Date


  • 2018

Citation


  • Mao, C., Liu, C., Yu, L., Li, H., & Liu, Y. (2018). Mechanical properties and tensile deformation behavior of a reduced activated ferritic-martensitic (RAFM) steel at elevated temperatures. Materials Science and Engineering A, 725, 283-289. doi:10.1016/j.msea.2018.03.119

Scopus Eid


  • 2-s2.0-85045413683

Start Page


  • 283

End Page


  • 289

Volume


  • 725

Issue


Place Of Publication