Application of texture inheritance on manufacturing ultra-high strength pearlitic steel wire

作者：Fang, Feng^*; Wang, Liping; Zhou, Lichu; Min, Xuegang; Jiang, Jianqing

来源：Materials Science and Technology, 2018, 34(7): 766-771.

DOI：10.1080/02670836.2017.1393999

• Cold drawing
• pearlitic wires
• texture inheritance
• tensile strength
• torsion tolerance

To obtain both ultra-high strength and good ductility in pearlitic steel wires, a new processing technique was proposed following the principle of inherited texture. Microstructure evolution of pearlitic wires was investigated by FE-SEM, EBSD and TEM, and while mechanical properties were determined by tensile and torsional tests. Two types of wires with different ferrite < 110 > texture intensity were obtained by varying pre-drawing strain. The orientation between ferrite <110> and drawing direction exhibited a great effect on the deformation behaviourofpearlite. For the ferrite < 110 > parallel to drawing direction, cementite lamellae were straightened and dislocations within ferrite were evenly distributed. However, for the ferrite < 110 > at an angle to drawing direction, the cementite was bent and the distribution of dislocations within ferrite was uneven. Consequently, pearlitic wires with a higher texture level exhibited an extremely high tensile strength, coupled with a remarkable torsion tolerance.

• 出版日期2018
• 单位东南大学