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In the present investigation, the effect of transition depth on the work hardening was studied when a bimetallic liner plate with a chromium carbide overlay on a mild steel substrate (CCO sample) and an impact plate made of austenitic manganese steel (impact plate sample) was subjected to abrasive wear. The abrasive wear test was conducted per the standard ASTM G65 test procedure. The CCO sample showed a lesser mass loss and enhanced resistance to abrasive wear as compared to the impact plate sample. The enhanced resistance to wear was attributed to the carbide phase in the CCO sample. However, impact plate sample showed a lower mean work hardening depth compared to the CCO sample. The nonwork hardened areas of both the samples showed nonexistence of dislocations and substructures. The microstructural investigation of the work-hardened area of austenitic manganese steel impact plate showed dislocation pile-up along the grain boundaries and at the grain interior. However, the CCO sample showed the formation of slip bands in the vicinity of the work-hardened area indicating localized plastic deformation.

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Effect of Transition Depth on the Work Hardening of Bimetallic Liner Plate with a Chromium Carbide Overlay and an Austenitic Manganese Steel Impact Plate Subjected to Abrasive Wear

  • 会议论文

  • 发表日期：

    2025年

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  • Mamookho Elizabeth Makhatha,
  • Kgotso Bhabha,
  • Sergei Sherbakov,
  • Daria Podgayskaya,
  • Pawan Kumar,
  • H. M. Vishwanatha

摘要

In the present investigation, the effect of transition depth on the work hardening was studied when a bimetallic liner plate with a chromium carbide overlay on a mild steel substrate (CCO sample) and an impact plate made of austenitic manganese steel (impact plate sample) was subjected to abrasive wear. The abrasive wear test was conducted per the standard ASTM G65 test procedure. The CCO sample showed a lesser mass loss and enhanced resistance to abrasive wear as compared to the impact plate sample. The enhanced resistance to wear was attributed to the carbide phase in the CCO sample. However, impact plate sample showed a lower mean work hardening depth compared to the CCO sample. The nonwork hardened areas of both the samples showed nonexistence of dislocations and substructures. The microstructural investigation of the work-hardened area of austenitic manganese steel impact plate showed dislocation pile-up along the grain boundaries and at the grain interior. However, the CCO sample showed the formation of slip bands in the vicinity of the work-hardened area indicating localized plastic deformation.