Mechanical Properties and Fracture Mode of 2 060 MPa Grade High-Strength Steel Wire at High-Temperature
CHEN Wei
SHEN Ruili
BAI Lunhua
QI Dongchun
YANG Jun
Abstract：The non-contact optical strain testing system was used to track and test the stress-strain curves of 2 060 MPa grade high-strength steel wire specimens throughout the entire process at 20-900℃.The mechanical performance index at high-temperature was determined,and the high-temperature fracture parameters of high-strength steel wire were obtained.The results indicate that the mechanical properties of high-strength steel wire specimens suffer various degrees of impairment at high-temperature.When the temperature does not exceed 200℃,the degradation of each mechanical property index of specimen shall not exceed 10%,and the fracture mode is brittle failure.After the temperature exceeds 200℃,the degradation of each mechanical property index of specimen significantly increases,and the fracture mode gradually changes from brittle failure to plastic failure.
Keywords：high-strength steel wirestress-strain curvehigh-temperaturemechanical performance indexdegree of impairmentfracture mode
Publication Date：2024-03-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 230-236 )