77K strong and ductile
With lamellar grains produced via controlled rolling and heat treatment, this BCC steel overcomes conventional low-temperature brittleness, achieving a synergy of strength and ductility at liquid-nitrogen temperature with lower raw-material costs than FCC steels and high-entropy alloys.
Jinhua, Zhou · Jing, Wang · Ren, Jungang · Ritchie, Robert O. · Zuncheng, Wang · Yu-chao, Wu · He, Zhufeng · Xin, Wang · Fu, Ying · Jiang, Yifu · Wang, Lin · Yin, Xiaowei
International Journal of Plasticity 2024
Excellent synergy of strength and ductility at 77K
Reverses the decreasing ductility trend with decreasing temperature
Lower raw material costs than current FCC structural steels and high-entropy alloys