The Impact of Retained Austenite Characteristics on the Two-Body Abrasive Wear Behavior of Ultrahigh Strength Bainitic Steels

Effect of Nanobainite Content on the Dry Sliding Wear Behavior of an Al-Alloyed High Carbon Steel with Nanobainitic Microstructure

“…It can be clearly observed that, the SWR gradually decreases as the nanobainite content in samples increases when the applied loads are 50 N and 75 N. The optimum wear resistance is achieved for B45 that contains a multiphase microstructure of martensite, nanobainite and γ B . It is claimed that microstructure with a combination of hard and soft phases is thought to be very beneficial in abrasive applications [18]. However, there is no much difference in SWR for samples tested under 25 N In addition, it is interesting that the SWR firstly increases and then decreases with increasing the applied loads for B10, B15, B30, and B45.…”

“…In addition to bainitic ferrite size, retained austenite characteristics (including its metastability, morphology and volume fraction) is another important factor affecting the wear resistance. Film-like retained austenite is more desirable for wear behavior because it generates smaller strain-induced martensite platelets, while block-like ones with less stability transformed to coarse fresh martensite, which is more vulnerable to crack initiation and propagation [18]. However, the authors of Reference [19] thought that metastable austenite was more prone to mechanically-induced transformation owing to lower carbon content and then resulted in more hardness increment and less wear rate than nanobainite.…”

Sliding wear of medium-carbon bainitic/martensitic/austenitic steel treated by short-term low-temperature austempering

“…These results denote enhanced carbon partitioning in the austempering treatment. The increases in fraction and carbon content of the RA are expected to favour the TRIP (transformation induced plasticity) effect in sliding wear [16].…”

“…For bainitic steels, lowering the isothermal transformation temperature leads to finer bainitic laths and, in some specially designed high-carbon Si-Mn-Cr alloyed steels, prohibits carbide precipitation. Such nano-bainitic structures have been found to show remarkably lower wear rates [15,16].…”

The Nitrocarburising Response of Low Temperature Bainite Steel

“…In all of these applications, there is potential for improved performance by enhancing the surface properties. There have been studies of microstructure and property relationships [1][2][3][4], crystallography [5,6], wear behavior [7,8], and thermal tempering [9,10] of nano-bainitic steels (henceforth termed low temperature bainite) but it has been no attempt to enhance its surface properties.…”