等温淬火对纳米贝氏体钢的组织和力学性能的影响

王玉钊, 蒋中华, 贾春妮, 张玉妥, 王培

Microstructure and Mechanical Properties of an Austempered Nanostructured Bainitic Steel

WANG Yuzhao, JIANG Zhonghua, JIA Chunni, ZHANG Yutuo, WANG Pei

表3 不同等温淬火工艺实验钢的拉伸性能

Table 3 Tensile properties of experimental steel after different austempering treatments

Austempering treatments Tensile strength / MPa Yield strength / MPa Elongation / % Temperature / oC Time / h 230 8 1872 ± 14.8 1220 ± 2.1 17.5 ± 0.35 16 1667 ± 0.71 1524 ± 23.2 27.5 ± 0.71 48 1625 ± 4.2 1505 ± 24.2 34.5 ± 3.89 270 8 1804 ± 43.1 1771 ± 0.7 2 ± 0.1 16 1773 ± 0.7 1556 ± 59.8 21.5 ± 0.1 48 1836 ± 0.7 1714 ± 1.4 18 ± 0.35