|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Material Design Approaches and Experiences IV
||Design of Wear Resistant Boron-modified Supermartensitic Stainless Steel by Spray Forming Process
||Guilherme Zepon, Ricardo Nogueira, Claudio Shyinti Kiminami, Walter JosÚ Botta, Claudemiro Bolfarini
|On-Site Speaker (Planned)
This paper presents the development of functionalized supermartensitic stainless steel with higher wear resistance when compared to conventional stainless steels without losing the corrosion resistance. The wear resistance was increased by the combination of two factors: (i) Adding boron contents (from 0.3 to 0.7%wt.), which leads to formation of hard M2B-type borides and; (ii) processing by spray forming which generates a material with high chemical and microstructural homogeneity. The solidification features of the spray forming process allows the formation of a continuous network of M2B borides uniformly distributed around refined (from 10 to 25 Ám) equiaxed martensitic grains. Different wear tests were performed to show the increasing of wear resistance independent of the wear mechanism present in the tribosystem. Furthermore, electrochemical tests such as dynamic polarization, electrochemical impedance spectroscopy and electrochemical noise were performed to evaluate the corrosion behavior of the boron modified alloys and comparing to commercial stainless steel.
||Planned: TMS Journal: JOM