Improvement of mechanical properties of large-scale low-carbon steel cast products using spray quenching
Improvement of mechanical properties of large-scale low-carbon steel cast products using spray quenching
复制标题
DOI：
10.1016/j.matlet.2016.09.079
复制
发表时间：
2016-12
影响因子：
3
通讯作者：
S. Nikulin;A. Rozhnov;S. Rogachev;T. A. Nechaykina;V. I. Anikeenko;V. Turilina
中科院分区：
文献类型：
--
作者：
S. Nikulin;A. Rozhnov;S. Rogachev;T. A. Nechaykina;V. I. Anikeenko;V. Turilina
本文介绍了20 GL型低碳钢货车转向架底梁经快速水流体积表面淬火（喷淋淬火）后，其力学性能得到改善。与标准化条件相比，在体积表面硬化到距离表面高达5-8 mm的深度之后形成具有可变强度和韧性的梯度结构提供了1.6-1.8倍的材料强度;它还改变了负载下的断裂动力学，并增加了静态和循环负载下的solebar抗断裂性。
We have revealed improvement of the mechanical properties of 20GL-type low-carbon steel solebars of freight bogies after volume-surface hardening with a fast-moving water stream (spray-quenching). Formation of a gradient structure having variable strength and toughness after volume-surface hardening to the depth up to 5–8 mm from the surface provides 1.6–1.8 times higher strength of the material as compared to a normalized condition; it also changes the fracture kinetics under load, and increases the solebar fracture resistance under static and cyclic loading.