Trial Production of High-strength Microalloying 20MnSi Reinforced Bar
-
摘要: 试制了高强度20MnSi螺纹钢筋,采用万能拉伸试验机、扫描电镜、透射电镜等检测手段,对试制后的螺纹钢进行了力学性能检测和显微组织分析。结果表明:在N含量为0.04%,V含量为0.047%的试验钢中,屈服强度达到831 MPa,抗拉强度达到1 140 MPa,伸长率为29.1%,屈强比为0.79;含钒、钛的碳、氮析出物的沉淀析出强化作用是试验钢力学性能显著改善的主要原因。Abstract: The method of trial production of high-strength microalloying 20 MnSi reinforced bar had been present in this paper. The mechanical properties and microstructures of the tested steel were investigated by universal tensile machine,scanning electron microscopy and transmission electron microscope. It was found out that the yield strength,tensile strength,elongation and yield ratio were 831 MPa,1 140 MPa,29.1% and 0.79,respectively,for the steel with 0.04%N and 0.047%V. It is expected that the improvement in mechanical properties of tested steel is attributed to the vanadium and titanium carbonitride precipitation strengthening.
-
Key words:
- 20MnSi reinforced bar /
- microalloying /
- vanadium /
- high nitrogen /
- mechanical property /
- micro-structure
-
计量
- 文章访问数: 173
- HTML全文浏览量: 50
- PDF下载量: 2
- 被引次数: 0
下载: