Mn / N比对22%Cr节Ni型双相不锈钢多道次焊接热影响区组织和力学性能的影响

郭孟雨, 杨银辉, 高梓豪, 曹建春, 吴诗裕, 陈晓雨

Effect of Mn / N Ratio on the Microstructure and Mechanical Properties of Multi-Pass Welding HAZ of 22%Cr Low Nickel Type Duplex Stainless Steel

GUO Mengyu, YANG Yinhui, GAO Zihao, CAO Jianchun, WU Shiyu, CHEN Xiaoyu

图6 DSS3试样经多道次焊接热循环后HAZ显微组织的STEM像和SAED花样

Fig.6 STEM images and SAED patterns of HAZ for DSS3 sample after multi-pass welding (a) distribution of GBA, IGA, and δ (b) dislocation distribution at γ/δ interface (c) enlarged morphology of Cr2N precipitates (d, f) SAED patterns of ferrite (d) and austenite and Cr2N precipitates (f) in Fig.6e (e) morphology of Cr2N precipitate at γ/δ interfaces