抄録
The high manganese steel containing 0.8-1.2%C and 10-14% Mn is generally used for the wear resisting steel which is very tough if it is treated by the so-called water-toughening.
To find out prevention method of defacement in case of being used for points of the railway, I make an experiment, using Amsler-type abrasion testing machine, and at slip velocities of 0-15cm/sec and contact pressures of 60-110kg/mm2.
The test piece of tyre in my test is about 0.7%C standard structure steel and the other material of high manganese steel is from 1050°C water-toughening.
The following are the findings resulted from the present test:
1) No satisfactory effect could be obtained owing to adhereing phenomenon between carbonsteel and high manganese steel.
2) High manganese steels which is low in surface hardness (Hs<60) is not so effective to reduce wearing as we expect.
3) From these facts, high manganese steel seems to be superior for its anti-shock toughness than its preventive effect for wearing.
