Abstract
The alloying of Hadfield steels aims at enhanced
mechanical properties and improvements in the wear
resistance. In this work, the impact and abrasive
properties of a chromium-alloyed high-manganese Hadfield
steel were experimentally studied using a wide variety of
testing techniques and characterization methods. In
addition, an in-service sample was characterized to
identify the wear and hardening mechanisms in a real
application (jaw crusher). The dynamic mechanical
behavior of the steel was determined using the Hopkinson
split bar technique. The abrasion properties were studied
with three-body abrasion tests using several different
natural abrasives. The effects of existing plastic strain
and normal loading on the surface hardening and wear rate
were further investigated with scratch testing.
High-velocity impact testing was performed to evaluate
the effect of pre-strain on the impact wear behavior of
the material. It was shown that the dynamic loading
affects both the yield behavior and the strain hardening
rate of the studied steel. The connection between
pre-strain, hardness, and wear rate in abrasion was
established. In impact conditions, plastic straining of
the surface layer first has a positive effect on the wear
resistance, but when strain hardening reached the
observed ductility limit, it showed an adverse effect on
the material's performance. The addition of chromium and
an increase in the manganese content from the nominal
ASTM Hadfield composition provided some improvements in
the strength, ductility, and surface hardening of the
studied steel.
Original language | English |
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Article number | 24 |
Journal | Tribology Letters |
Volume | 57 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2015 |
MoE publication type | A1 Journal article-refereed |
Keywords
- hadfield manganese steel
- work hardening
- high strain rate
- abrasive wear
- impact wear
- plasticity
- ProperTune