Effect of Quenching and Partitioning Heat Treatment on Ductile Cast Irons Pipeng Zhao, Jing Wang, Baoxu Hang, Yanghe Wang, Jie Ma, Xingchuan Zhao and Changzheng Wang MATEC Web Conf., 67 (2016) 05013 Published online: 29 July 2016 DOI: 10.1051/matecconf/20166705013