铸造技术2016，Vol.37Issue(9)：1812-1814,3.DOI:10.16410/j.issn1000-8365.2016.09.003
400-18LT球墨铸铁的韧脆转变温度检测方法研究
Investigation on Detection Method for Ductile-brittle Transition Temperature of 400-18LT Ductile Iron
王耀栋 1曾小勤 1谢震2
作者信息
- 1. 上海交通大学材料科学与工程学院,上海200240
- 2. 常州华德机械有限公司,江苏常州213234
- 折叠
摘要
Abstract
The low temperature impact property of QT400-18LT was investigated and its impact energy varies with temperature was calculated.The result show that with the decline of impact temperature,the impact energy decreases and the ductile-brittle transition temperature point is-74.3 ℃.The ZESS-18 SEM was applied to observe impact fracture morphology,and the crystalline zone section rate was tested,the ductile-brittle transition temperature was-72.4 ℃ according to crystalline zone section curve with temperature increasing.The tested ductile-brittle temperature from two methods was nearly identical.关键词
QT400-18LT/冲击功/断口形貌/晶状区断面/韧脆转变温度Key words
impact energy/fracture morphology/crystalline zone fracture section/ductile-brittle transition temperature分类
矿业与冶金引用本文复制引用
王耀栋,曾小勤,谢震..400-18LT球墨铸铁的韧脆转变温度检测方法研究[J].铸造技术,2016,37(9):1812-1814,3.
