Effect of cold rolling reduction on microstructure and properties of chain steel
The effect of cold rolling reduction on microstructure and properties of chain steel was studied on a cold rolling test machine.The microstructure and properties of the tested steel were analyzed by DMIRM optical electron microscopy,SIGMA300 field emission scanning electron microscopy,CMT5305 computer-controlled electronic ten-sile testing machine and HR-150A Rockwell hardness tester.The results show that cold rolling can produce work hardening effect and improve surface hardness.With the increase of cold rolling reduction,the microstructure of the test steel is refined,which is beneficial to the increase of strength and hardness,but the elongation will be reduced.
cold rolling reductionchain steelmicrostructureproperties
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