Increasing the abrasive wear resistance of low-alloy steel by obtaining residual metastable austenite in the structure

Малинов, Л. С.; Malinov, V. L.; Burova, D. V.; Аниченков, Виктор Васильевич

doi:10.3103/s1068366615030083

Cited by 11 publications

(6 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The transformation of metastable austenite to martensite under mechanical load can be used as a phenomenon to distinguish between wear conditions. This effect is being extensively used to increase the wear resistance of steels and cast irons subjected to cavitation [ 16 ] and AW [ 17 , 18 , 19 , 20 ]. Transformation is possible when austenite undergoes deformation (bulk [ 21 , 22 ] or in a thin surface layer [ 17 , 18 ]) in the temperature range between the martensite start temperature (M s ) and temperature M d .…”

Section: Introductionmentioning

confidence: 99%

“…This effect is being extensively used to increase the wear resistance of steels and cast irons subjected to cavitation [ 16 ] and AW [ 17 , 18 , 19 , 20 ]. Transformation is possible when austenite undergoes deformation (bulk [ 21 , 22 ] or in a thin surface layer [ 17 , 18 ]) in the temperature range between the martensite start temperature (M s ) and temperature M d . At temperatures above M d , austenite cannot be transformed at any degree of deformation [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Abrasive Wear of High-Carbon Low-Alloyed Austenite Steel: Microhardness, Microstructure and X-ray Characteristics of Worn Surface

et al. 2021

View full text Add to dashboard Cite

A high-carbon, high-silicon steel (1.21 wt% C, 2.56 wt% Mn, 1.59 wt% Si) was subjected to quenching from 900 and 1000 °C, resulting in microstructures containing 60 and 94% of retained austenite, respectively. Subsequent abrasive wear tests of quenched samples were performed using two-body abrasion and three-body abrasion testing machines. Investigations on worn surface and subsurface were carried out using SEM, XRD, and microhardness measurement. It was found that the highest microhardness of worn surface (about 1400 HV0.05) was achieved on samples quenched from 900 °C after three-body abrasion. Microhardness of samples after two-body abrasion was noticeably smaller. with a maximum of about 1200 HV0.05. This difference correlates with microstructure investigations along with XRD results. Three-body abrasion has produced a significantly deeper deformed layer; corresponding diffractograms show bigger values of the full width at half maximum parameter (FWHM) for both α and γ alone standing peaks. The obtained results are discussed in the light of possible differences in abrasive wear conditions and differing stability of retained austenite after quenching from different temperatures. It is shown that a structure of metastable austenite may be used as a detector for wear conditions, as the sensitivity of such austenite to phase transformation strongly depends on wear conditions, and even small changes in the latter lead to significant differences in the properties of the worn surface.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Abrasive Wear of High-Carbon Low-Alloyed Austenite Steel: Microhardness, Microstructure and X-ray Characteristics of Worn Surface

et al. 2021

View full text Add to dashboard Cite

show abstract

“…They are also considered as perspective materials with increased fatigue durability and wear resistance [24][25][26][27]. Improved wear behaviour of carbide-free lower bainite is associated with the transformation of retained austenite into martensite under wear, providing an increase in surface hardness [28] and stress relaxation [29]. The suitability of nanobainite steels as elements of welded constructions is investigated in [30] focusing on the properties in the heat-affected zone.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of carbide-free lower bainite in complex-alloyed constructional steel: Effect of bainitizing treatment parameters

Zurnadzhy¹,

Ефременко²,

Petryshynets³

et al. 2020

View full text Add to dashboard Cite

Tensile/impact behaviour of lower bainite obtained in high-Si steel 55Si3Mn2CrMoVNb was studied using SEM, TEM, and XRD. Specimens were austenitized at 900 • C and isothermally treated at 250, 270, and 300 • C with holding up to 600 min. The heat treatment results in the formation of cementite-free lower bainite/retained austenite structure, where retained austenite was found as blocky "islands" and interlaths "films". The width of bainitic ferrite laths decreases from 170-240 µm to 45-80 µm with holding temperature decreasing. This results in increasing UTS (to 1700 MPa) and hardness (to 52 HRC). The optimal combination of mechanical properties (UTS 1397-1522 MPa, hardness 45-47 HRC, total elongation 18-21 %, U-notched impact toughness 105-139 J cm −2 ) refers to holding at 300 • C to be associated with higher amount of retained austenite (30-33 %). With prolonging the bainitizing duration the hardness and ductility decreases while impact toughness increases. Prolonged holding at 300 • C leads to a continuation of bainite transformation and precipitation of transitional carbides within ferrite laths. K e y w o r d s : carbide-free lower bainite, retained austenite, phase transformations, microstructure, mechanical properties

show abstract

“…Reducing wear loss may be achieved in several ways. Widely used methods are deposition of protective layers by surfacing [7][8][9], optimization of bulk heat treatment [10,11,12] or surface modifying treatment [13][14][15][16] of properly chosen wear resistant compositions. Recently new class of wear resistant materials for abrasive wear environment is proposed.…”

Section: Introductionmentioning

confidence: 99%

Structure of High-Carbon Steel After Welding With Rapid Cooling

Kalinin¹,

Брыков

Petryshynets

et al. 2019

Acta Metall Slovaca

View full text Add to dashboard Cite

<p class="AMSmaintext1">In this paper the effect of rapid cooling during arc welding on the structure of fusion layer and heat affected zone (HAZ) of high-carbon low alloyed steel have been studied. The main idea was that despite of high carbon content (1.2%) it is necessary to achieve quenching in HAZ. Due to proper chemical composition of welded steel martensite start temperature Ms is about 20 <sup>o</sup>C, therefore austenitic structure of quenched metal is preserved after rapid cooling. Exposition of HAZ to excessive heat during welding cycle leads to local precipitation of carbides from austenite and thus raising of Ms. In this case some amount of martensite was present in structure after cooling along with austenite and carbides. Microstructure, microhardness and chemical composition of remelted electrode metal, fusion zone and HAZ were studied by means of optical microscopy, SEM, EDX and microhardness testing.</p>

show abstract

Increasing the abrasive wear resistance of low-alloy steel by obtaining residual metastable austenite in the structure

Cited by 11 publications

References 1 publication

Abrasive Wear of High-Carbon Low-Alloyed Austenite Steel: Microhardness, Microstructure and X-ray Characteristics of Worn Surface

Abrasive Wear of High-Carbon Low-Alloyed Austenite Steel: Microhardness, Microstructure and X-ray Characteristics of Worn Surface

Mechanical properties of carbide-free lower bainite in complex-alloyed constructional steel: Effect of bainitizing treatment parameters

Structure of High-Carbon Steel After Welding With Rapid Cooling

Contact Info

Product

Resources

About