原位(Ti,V)C颗粒弥散强化奥氏体不锈钢的显微组织与力学性能  

Microstructure and Mechanical Property of In-Situ(Ti, V)C Dispersion Strengthened Austenitic Stainless Steel

作　　者：徐连明[1,2] 何广仁[1,2] 姚利丽[1,2] 李江[1,2] 底华芳 王威[1] 倪自飞[1,2] 

机构地区：[1]江苏兴达钢帘线股份有限公司,江苏泰州225721 [2]江苏省结构与功能复合材料重点实验室,江苏泰州225721

出　　处：《铸造》2015年第2期113-116,共4页Foundry

摘　　要：用原位合成法制备了（Ti,V）C颗粒增强304不锈钢。显微组织观察表明原位生成的（Ti,V）C颗粒尺寸在4~10μm,局部有轻微颗粒团聚现象。（Ti,V）C颗粒的加入使得304强化钢的力学性能得到明显的提高,高温下（Ti,V）C的强化效果更显著,但塑性和韧性有所下降。与304不锈钢（母合金）相比,用原位合成工艺引入（Ti,V）C颗粒后,强化钢在700℃/100 MPa温度和应力条件下的抗蠕变性能得到大幅度提高。（Ti, V）C dispersion strengthened 304 stainless steel was fabricated by in-situ reaction technology. Microstructure observation reveals that the distribution of the added （Ti, V）C particles with the size of4-10 μm is basically uniform in the matrix, but slight aggregation of particles is observed in a few areas in the microstructure. The addition of the （Ti, V）C particles into the 304 stainless steel results in a significant increase of the tensile strength at both the room temperature and the high temperature, but a decrease of the ductility and the toughness. Compared with the 304 stainless steel matrix, the creep resistance of the 304 steel strengthened with the addition of the （Ti, V）C particles increases notably at the temperature of 700 ℃ and the applied stress of 100 MPa.

关 键 词：(Ti V)C 显微组织 力学性能 蠕变 

分 类 号：TG142.71[一般工业技术—材料科学与工程]