Study on Erosion Behavior of Ductile Iron After Austempering Heat Treatment

• Main Authors: Tso-Jung Shih 施作融, 施作融
• Other Authors: Tzu-Piao Tang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/vxvaew

碩士 === 國立臺北科技大學 === 材料及資源工程系研究所 === 99 === This research applied austempering heat treatment to obtain various microstructures in the matrix of ductile iron and studied their erosion wear behavior. The effects of different impact angle and microstructure on erosion wear rate and morphology were investigated. Hardness test evaluation together with SEM analysis were also carried out to correlate the wear behavior observed. The results showed that after austempering hardness increased substantially. From the results of erosion wear test on ADI, it is found test the ability for erosion resistance of ADI is improved. Due to poor impact wear resistance of the graphite, they fell off from the matrix in early stage of the shot blasting leaving a hole behind that acclerated the peeling off effect of the ductile iron. Higher hardness enhanced eorsion wear resistance from the ability of sustaining deformation and peeling off effects.