Effect of Aluminum Content on the Mechanical Properties of AISI 410 Stainless Steel

• Main Authors: Feng-tse Tsai, 蔡豐澤
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/19939575539913861105

碩士 === 國立雲林科技大學 === 機械工程系碩士班 === 95 === This study investigates the effect of aluminum content on the mechanical properties of AISI 410 stainless steel at different solution temperature(850℃-1000℃). The microstructure, including metallography, grain size, retained austenite, fracture surface of impact and tensile specimens, size and kinds of precipitates were conducted. The mechanical properties, including tensile stress, yield stress, hardness, impact energy, elongation and reduction area were measured. It was found that tensile stress, yield stress and hardness increase with increasing solution temperature due to the increase of hardenability and dissolution of carbides. Furthermore, impact energy, elongation and reduction area decrease with increasing solution temperature. It was found that tensile stress, yield stress and impact energy decrease with increasing aluminum content due to the increase of prior austenite grain size. The grain size of the specimens content 0.022wt% and 0.037wt% were almost twice as coarse as that of the specimen containing 0.013wt% aluminum after solution treatment at 1000℃. It is postulated that aluminum nitride precipitates become coarse in the steel containing more aluminum.