铸造2012，Vol.61Issue(2)：214-218,222,6.
喷丸强化对合金化奥贝球铁疲劳性能的影响
Effect of Shot Peening Process on Fatigue Behavior of Alloyed Austempered Ductile Iron
摘要
Abstract
Shot peening is one of the most common surface treatments to improve the fatigue behavior of metallic parts. In this study the effect of shot peening process on the fatigue behavior of an alloyed austempered ductile iron (ADI) has been studied. Austempering heat treatment consisted of austenitizing at 875℃ for 90 min and following austempering at 320 ℃, 365 ℃ and 400 ℃. Rotating-bending fatigue test was carried out on samples after shot peening by 0.4 to 0.6 mm shots. XRD and SEM analysis, micro hardness and roughness tests were carried out to study the fatigue behavior of the samples. Results indicate that the fatigue strengths of samples austempered at 320 ℃, 365 ℃ and 400 ℃ are increased by 27.3%, 33.3% and 48.4%, respectively after shot peening process.关键词
奥贝球铁/喷丸处理/疲劳强度/韧性Key words
austempered ductile iron/ shot peening/ fatigue strength/ roughness分类
矿业与冶金引用本文复制引用
Amir Sadighzadeh Benam,Sasan Yazdani,Behzad Avishan..喷丸强化对合金化奥贝球铁疲劳性能的影响[J].铸造,2012,61(2):214-218,222,6.基金项目
本项工作获得Sahand理工大学研究委员会的资金支助 （）
