Ž . In the aerospace industry, 9Cr18 martensitic stainless steel AISI 440 is commonly used as a bearing material. Because of its Ž . ability to rapidly treat irregular industrial components, plasma immersion ion implantation PIII is an effective method to improve the wear resistance of 9Cr18 precision bearings and prolong their working lifetime. Vacuum arc plasma sources provide a good means of...

In the present study, the corrosion behavior of AISI 347 austenitic stainless steel to ASTM A335 low alloy steel dissimilar joint was investigated. For this purpose, two filler metals, ER309L and ERNiCr-3, were selected to be used during the gas tungsten arc welding process. To investigate the corrosion behavior of the joints after welding, the specimens were tested in 3.5% sodium chloride solu...

A formula is proposed to calculate the chemical austenitising temperature derived by means of a neural network model. A wide range of compositions were used, allowing to predict changes of tendency in the slopes of the austenitisation temperature, consistent with the existence of a eutectoid composition.

The influence of 600°C aging treatment on the microstructure and mechanical properties 316H stainless steel weld metals with different C contents have been studied. results indicated that during process, rapid precipitation M23C6 carbide occurred in ?-ferrite firstly owing to high diffusion rate C. After is depleted by M23C6, residual transforms into ? phase through eutectoid transformation (?-...

3 IMR KINKEN Research Highlights 2012 IMR KINKEN Research Highlights 2012 To reduce the fuel consumption by automobiles, medium carbon steels for forging parts, such as shafts and connecting rods, must be further strengthened. When carbide-forming elements such as Ti, Nb, and V, are alloyed with carbon steels, a fine dispersion of alloy carbides and large precipitation hardening can be achieved...