@article{(Open Science Index):https://publications.waset.org/pdf/17119,
	  title     = {Effect of Zr Addition on Mechanical Properties of Cr-Mo Plastic Mold Steels},
	  author    = {Hyun-Ho Kim and  Seok-Jae Lee and  Oh-Yeon Lee},
	  country	= {},
	  institution	= {},
	  abstract     = {We investigated the effects of the additions of Zr and other alloying elements on the mechanical properties and microstructure in Cr-Mo plastic mold steels. The addition of alloying elements changed the microstructure of the normalized samples from the upper bainite to lower bainite due to the increased hardenability. The tempering temperature influenced the strength and hardness values, especially the phenomenon of 350oC embrittlement was observed. The alloy additions of Cr, Mo, and V improved the resistance to the temper embrittlement. The addition of Zr improved the tensile strength and yield strength, but the impact energy was sharply decreased. It may be caused by the formation of Zr-MnS inclusion and rectangular-shaped Zr inclusion due to the Zr addition.
},
	    journal   = {International Journal of Materials and Metallurgical Engineering},
	  volume    = {7},
	  number    = {10},
	  year      = {2013},
	  pages     = {738 - 741},
	  ee        = {https://publications.waset.org/pdf/17119},
	  url   	= {https://publications.waset.org/vol/82},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 82, 2013},
	}