Investigation on torsion ductility degradation of high strength steel wire
A newly developed high strength steel wire (1770 MPa grade)suffered a vital problem that a large part of the galvanized wire (7 mm in diameter)presented very low torsional ductility that could not meet the product requirement.The present investigation was to identify the reason responsible for the low torsional ductility of the wire.The results indicate that the number of twists at torsion rupture of the wire drops when it experienced short times at 435℃ and the value upgrades after the wire being further heated at this temperature.In summary,torsional ductility degradation of the wire is attributed to the nonuniform microstructure distribution involving the consequence of strain aging caused by the nonuniform temperature distribution in the wire cross section.
high strength steel wire torsion rupture torsional ductility strain aging
Hong Youshi Wu Xiaolei Liu Junliang Wang Junyi Shen Wei Wang Zhijia Xie Ziling
LNM,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China Baoshan Iron &Steel Co.,Ltd.,Shanghai 201900,China
国际会议
上海
英文
1185-1189
2008-09-26（万方平台首次上网日期，不代表论文的发表时间）