材料期刊网

TRANSFORMATION INDUCED SUPERPLASTICITY IN 18Ni MARAGING STEEL

YIN Zhongda Harbin Institute of Technology , Harbin , ChinaZHOU Yongkang Shanghai Centrifugal Machinery Research Institute , Shanghai , China

金属学报(英文版)

After exploring the influence of stress,cold-rolling reduction and cooling rate on transforma- tion induced strain,the transformation induced superplasticity forming technique of the 18Ni maraging steel(2450 MPa)was developed.Through 14 times γα′ cyclic transformation,the limited elongation of 320% can be obtained in 60% cold-rolled specimen.TEM observation revealed that the morphology of stress induced martensite is massive.

关键词: maraging steel , null , null