Al-Ti-B alloy wire was added to new high strength wear resistant piston materials—BH135online referring to understand its refining effects.The results reveal that Al-Ti-B wire is independent on the Al-P modification.With 0.1% Al-Ti-B wire

coarse columnar grain and feathery grain in BH135 alloy are converted into fine equiaxed grain

where the grain size is refined to approximately 576μm.Meanwhile

the tensile strength

elongation and fatique rength of the modified BH135 alloy are increased by 3.8%

6

.0%

13%

11.4%

1

7.1%

respectibely.