Fabrication of Ultra-fine Grained Rod for High Carbon Steal
会议名称：《第二届先进钢铁结构材料国际会议》
会议日期：2004年
学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
关 键 词：High Carbon Steel Pearlite Warm Cross Wedge Rolling Ultra-Fine Grain Rod Piece
摘 要：正A kind of ultra-fine grained rods with （α+θ） microduplex structures for 78Cr steel has been fabricated through warm cross wedge rolling （WCWR）. The results are as follows:The rod pieces whose size was φ（17～21）×180mm with （α+θ） microduplex structures are fabricated successfully through WCWR, and their maximum rolling reduction reaches 78%. After WCWR, the microstructure from surface to the half of radius of the rod has been refined. The cementite particle size is about 0.1～0.2μm and the ferrite grain size about0.5μ*** WCWR, the initial cementite on section of the rod is spheroidized non-uniformly. The cementite on the surface layer has been spheroidized more fully than at the *** WCWR, the hardness on section of the rod has a non-uniform distribution, with the value of hardness at the center a little higher than at the surface layer.