4.5 Article

The size effect of martensite laths and precipitates on high strength wear-resistant steels

Journal

MATERIALS RESEARCH EXPRESS
Volume 8, Issue 12, Pages -

Publisher

IOP Publishing Ltd
DOI: 10.1088/2053-1591/ac433e

Keywords

wear-resistant steel; size effect; tempered martensite lath; precipitate

Ask authors/readers for more resources

The study investigated different alloy compositions of wear-resistant steels and found that ARIV exhibited higher strength and hardness, relatively uniform toughness distribution, smaller martensite lath width, and more precipitates below 50 nanometers.
Low alloy high strength wear resistant steels are with high toughness, low cost and good abrasion resistance. It can effectively resist the propagation of wear cracks and prolong the service life of machine components. This paper focuses on the internal relationship between macroscopic physical properties and microscopic martensite lath and precipitate size throughout thickness of wear resistant steel. Four kinds of 40mm thickness wear resistant steels with different alloy chemical composition were produced and investigated. Results show the strength and hardness performance of ARIV are obviously higher than other three steels. ARI have a relatively large strength difference through thickness. The impact toughness of ARIV is relatively uniform, which is greater than that of the ARIII at middle layer and lower than that of the ARIII at 1/4 layer. The width of martensite lath of ARIV is relatively small, mainly 100 similar to 300 nm, while that of ARII and ARIII is mainly 200 similar to 400 nm. ARIV steel has shorter martensite lath band and more precipitates below 50 nm. It indicates that the size of martensite laths and precipitates of wear-resistant steels are important factors to determine its performance throughout thickness.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available