Analysis on black line defects in P91 steel welded joint aged at 650 ℃
Sun Xiong, Liu Sheng, Wang Shutao, Yang Chao, Yang Qingxu, Li Xiqiang
Heat Treatment of Metals . 2020, (1): 254 -258 .  DOI: 10.13251/j.issn.0254-6051.2020.01.049