关键词：热影响区；焊接接头；超细晶粒钢 [gap=1043]Key words：heat affected zone饵Az)；welding joint；ultra fine grained steel
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ultra-fine grained steel 超细晶粒钢的
ultra fine grained steel bar 超细晶棒材
The key technique of hot rolling low carbon ultra-fine grained steel strip consists in controlled rolling and controlled cooling.
细晶粒低碳钢生产的关键技术在于控轧控冷。
The invention discloses a method for preparing high-strength and high-plasticity ultra-fine grained ferrite and nano-carbide low-carbon steel.
本发明公开一种高强度高塑性超细晶铁素体和纳米碳化物低碳钢制备方法。
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