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Weldability of 780 MPa Super-High Strength Heavy-Duty Truck Crossbeam Steel

WANG Xiao-nan , DI Hong-shuang , ZHANG Chi , DU Lin-xiu , DONG Xue-xin

钢铁研究学报(英文版)

CO2-shielded welding experiments of newly developed, 780 MPa super-high strength heavy-duty truck crossbeam steel were conducted, and the microstructure, microhardness, mechanical properties, and impact toughness of the welded joint were studied. The evolution of the microstructure of the welded joi...

关键词: super-high strength steel , crossbeam steel , weldability , M/A island , impact toughness

Relationship Among Microstructure and Properties and Heat Treatment Process of Ultra-High Strength X120 Pipeline Steel

ZHOU Min , DU Lin-xiu , LIU Xiang-hua

钢铁研究学报(英文版)

The variation of heat treatments including directed quenching and tempering off-line after controlled rolling (DQT) and quenching off-line and tempering off-line after controlled rolling (RQT) with microstructure and mechanical properties of a low-carbon microalloyed steel was compared and analyzed....

关键词: X120 pipeline steel , heat treatment , microstructure , mechanical property , fracture-separation

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