回火温度对含 <strong><i>δ</i></strong> 铁素体高铝中锰钢力学性能和显微组织的影响

回火温度对含 δ 铁素体高铝中锰钢力学性能和显微组织的影响

沈国慧, 胡斌, 杨占兵, 罗海文

Influence of Tempering Temperature on Mechanical Properties and Microstructures of High-Al-Contained Medium Mn Steel Having δ-Ferrite

SHEN Guohui, HU Bin, YANG Zhanbing, LUO Haiwen

表2 本研究钢和文献[15,23]中研究钢的化学成分、δ相体积分数、平均晶粒尺寸、热轧温度和轧制压下率对比

Table 2 Comparisons of composition, δ phase volume fraction, grain size, finishing rolling temperature and rolling reduction ratio of studied steel and the reference steel cited in Refs.[15,23]

Specimen

Composition

(mass fraction / %)

Volume fraction of δ phase / %

Grain size of

δ / μm

Finishing rolling temperature

^oC

Rolling reduction ratio / %

T300

0.4C-7Mn-3Al-1.3Si-0.4(V + Nb)

15.0

2.63 ± 0.48

900

92.0

Steel in Refs.[15,23]

0.2C-9.7Mn-3.2Al-3.4Si

52.4

25.1

750

91.6