STUDY OF CHEMICAL COMPOSITION AND THERMAL STABILITY OF REVERTED AUSTENITE IN QLT-TREATED 9%Ni STEEL
Utilizing high resolution transmission electron microscopy(HRTEM)and X-ray diffraction(XRD),chemical composition characteristics and thermal stability of reverted Austenite(RA)in 9%Ni steel processed by quench-lamellarize-temper(QLT)heat-treatment has been investigated.The results showed that Austenite-stabilizing elements,such as Ni,Mn,are inclined to concentrate in reverted Austenite and distribute unevenly in it,higher near the boundary as high as 21%and lower in the centre.It was also found that RA has good heat and mechanical stability in 9%Ni steel but likely loses its stability and transform to Martensite undergoing both ultra low temperature and mechanical loading,accordingly inducing plasticity unceasingly.
9 Ni steels reverted austenite QLT alloy enrichment mechanical stability
PAN Tao YANG Caifu SU Hang
Division of structural Materials,Central Iron & Steel Research Institute,No.76 Xueyuan Nanlu,Beijing,100081,China
国内会议
杭州
英文
165-171
2015-11-11（万方平台首次上网日期，不代表论文的发表时间）