Cementite nano-crystallization in cold drawn pearlitic wires instigated by low temperature annealing. (15th July 2016)

• Record Type: Journal Article
• Authors: Zhou, Lichu; Fang, Feng; Zhou, Xuefeng; Tu, Yiyou; Xie, Zonghan; Jiang, Jianqing
• Is Part Of: Scripta materialia. Volume 120(2016)
• Page Start: 5
• Page End: 8
• Publication Date: 2016-07-15
• Subjects: Cold drawn -- Pearlitic wire -- Cementite -- Annealing -- Crystallization; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.04.002
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: The effects of low temperature annealing on the cementite structure and mechanical properties of cold drawn pearlitic steel wires were investigated. It was found that the thermal annealing at a temperature as low as 483 K could transform cementite in the as-drawn steel wires (ε = 2.0) from amorphous to nano-crystalline state. Against the conventional belief, the low temperature annealing treatment could simultaneously enhance the tensile strength and ductility of the cold drawn wires, for example, by 10% through the annealing treatment at 483 K. The underlying mechanisms responsible for enhanced mechanical properties were discussed, with a focus on the effects of solute carbon diffusion and cementite nanostructure. Graphical abstracts: