<strong>M-A</strong>岛高温回火转变产物对核电<strong>SA508-3</strong>钢冲击韧性影响机制

M-A岛高温回火转变产物对核电SA508-3钢冲击韧性影响机制

蒋中华, 杜军毅, 王培, 郑建能, 李殿中, 李依依

Mechanism of Improving the Impact Toughness of SA508-3 Steel Used for Nuclear Power by Pre-Transformation of M-A Islands

JIANG Zhonghua, DU Junyi, WANG Pei, ZHENG Jianneng, LI Dianzhong, LI Yiyi

图4 SA508-3钢正火态显微组织
(a) EBSD image quality map showing the different phases (BF—bainitic ferrite in grey, A_R in red, M in dark grey)
(b) TEM bright-field image of blocky A_R island and corresponding selected area electron diffraction (SAED) pattern (inset)
(c) TEM bright-field image from region 1 in Fig.4b
(d) TEM bright-field image of twined M island and SAED pattern (inset)

Fig.4 As-normalized microstructures of SA508-3 steel