Abstract：Hot ductility of SAPH440 steel contained Ti cc slabs, produced by PAN STEEL, was measured with Gleeble 1500 hot tensile machine in temperature range of 1400～600℃. The fracture appearance and microstructure were examined. The first zone of low ductility was found in the range of TL～1350℃,the third zone of low ductility was found in the range of 950～725℃. The two main causes for the low ductility are the precipitation of A1N and formation of network-shape ferrite at grain boundaries. Enhancing the temperature over 950℃ during bending and straightening is beneficial to reduce the surface cracks.
孙彦辉. 含钛微合金钢SAPH440高温热塑性研究[J]. 中国钢铁期刊网, 2010, 29(2): 4-4.
SUN Yan-Hui. Study on hot ductility of SAPH440 steel. Chinese Journal of Iron and Steel, 2010, 29(2): 4-4.
2010, Vol. 29 
