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

图3 热轧和不同温度回火后试样显微组织的EBSD和SEM像

Fig.3 EBSD (a, c, e, f, j, l) and SEM (b, d, g, h, i, k) images of microstructure for specimens HR (a-c), T300 (d-f), T400 (g), T500 (h), T600 (i, j), and T700 (k, l) observed along the transverse direction (TD) (α', γ, α, δ, and θ represent martensite, austenite, ferrite, δ-ferrite, and cementite, respectively; the green and white colors in EBSD images represent austenite and martensite/ferrite, respectively; the blue and black lines represent low angle boundary (< 15°) and high angle boundary (> 15°), respectively; ND and RD are normal and rolling directions, respectively)