低合金高强钢断后伸长率不合格原因分析
孙雪娇
Causes analysis on anormal elongation of low-alloyed high strength steel
Sun Xuejiao
金属热处理 . 2020, (5): 262 -265 .  DOI: 10.13251/j.issn.0254-6051.2020.05.050