铸造2017，Vol.66Issue(10)：1100-1103,4.
Nb对中铬耐磨铸钢组织及力学性能的影响
Effect of Nb on Microstructure and Mechanical Properties of Medium Cr W ear-Resistant Cast Steel
张拓 1曹静 1滕铝丹 1杨弋涛1
作者信息
- 1. 上海大学材料科学与工程学院,上海 200072
- 折叠
摘要
Abstract
Scanning electron microscopy, room temperature tensile testing machine and XRD analyzer were used to investigate the effects of Nb on the microstructure, content and type of carbide and mechanical properties of medium chromium wear-resistant cast steel. The results show that with the increase of Nb content, the carbide content in the steel increases, and the main kind of carbide transforms from (Cr, Fe)7C3 to NbC. The tensile strength increases with the addition of Nb, but the hardness is not affected very much. When the content of Nb in the sample is about 0.2%, the carbides are small and discontinuous, and the steel shows relatively good mechanical properties due to mechanisms of fine-grained strengthening and solution strengthening.关键词
Nb含量/耐磨铸钢/显微组织/力学性能Key words
Nb content/wear-resistant cast steel/microstructure/mechanical property分类
矿业与冶金引用本文复制引用
张拓,曹静,滕铝丹,杨弋涛..Nb对中铬耐磨铸钢组织及力学性能的影响[J].铸造,2017,66(10):1100-1103,4.
