Structure and properties of manganese series low carbon high alloyed liner steel

Abstract

Manganese was substituted for nickel in a Fe–9Cr–0˙2C–2Ni–0˙7Mo–RE steel to determine the scope for achieving a lower cost alloy with adequate properties. The effect on structures and properties was investigated by metallography, X-ray diffractometry and hardness and impact–corrosion–abrasion tests. The manganese substituted steel was found to have a structure consisting fully of lath martensite after hardening and tempering. Its hardness was 5–6 HRC higher and the impact toughness was 10 J cm^–2 lower than that of the nickel containing steel. The corrosion resistance and the impact–corrosion–abrasion resistance were slightly reduced. It is concluded that substituting nickel with manganese is feasible for liner steel applications.

Keywords:

• LOW CARBON
• HIGH ALLOYED STEEL
• WET GRINDING LINERS
• MANGANESE
• HARDENABILITY
• IMPACT STRENGTH
• ABRASION RESISTANCE
• CORROSION RESISTANCE