The hardening gradient and the character of abrasion in hardening layer of hypoeutectoidsteel with two kinds of matrixes that was treated by laser beam have been studied.
研究了两种基体的亚共析钢经激光处理后，其硬化层的硬度梯度及其磨损特性。
2
Both steel iron and cast iron have the structures of eutectoid, hypoeutectoid and hypereutectoid.