scholarly journals Effect of tempering temperature on the microstructure and creep resistance of a 10%Cr martensitic steel

2021 ◽  
Vol 1014 (1) ◽  
pp. 012027
Author(s):  
R V Mishnev ◽  
N R Dudova ◽  
R O Kaibyshev
Keyword(s):  
Creep Resistance ◽  
Martensitic Steel ◽  
Tempering Temperature

Preparation and Mechanical Properties of Ultra-Fine Grain Medium-Carbon Steel Based on Equal-Channel Angular Pressing

2015 ◽  
Vol 645-646 ◽  
pp. 427-434
Author(s):  
Jian Min Wang ◽  
Wen Tao Hou ◽  
Lin Lu
Keyword(s):  
Phase Transformation ◽  
Carbon Steel ◽  
Equal Channel Angular Pressing ◽  
Martensitic Steel ◽  
Medium Carbon Steel ◽  
Optimal Size ◽  
Tempering Temperature ◽  
Medium Carbon ◽  
Angular Pressing ◽  
Average Grain Size

A new technology of preparing submicron medium-carbon steel quickly using martensitic steel by equal-channel angular pressing is developed. The technology combines martensite phase transformation with severe plastic deformation. In this research, martensitic steel is heated to 923K quickly and held for appropriate time, then equal-channel angular pressing is implemented. Supersaturated ferrites of average grain size within 0.5μm are obtained by the interaction of dislocation intersection, dynamic recrystallization and strain-induced phase transformation. At the same time, strain-induced phase transformation leads to dispersive precipitation of supersaturated carbon particles in the form of carbide inside grains or in grain boundaries. The optimal size of ferrite grains and the optimal distribution of carbides are acquired by controlling tempering temperature and time. The results show that ultra-fine grained materials prepared by this technology possess superior thermal stability.

Microstructural aspects of superior creep resistance of a 10%Cr martensitic steel

2016 ◽  
Vol 678 ◽  
pp. 178-189 ◽  
Author(s):  
R. Mishnev ◽  
N. Dudova ◽  
A. Fedoseeva ◽  
R. Kaibyshev
Keyword(s):  
Creep Resistance ◽  
Martensitic Steel

scholarly journals Enhanced creep resistance of Y-bearing 9Cr ferritic/martensitic steel via vacuum casting technique

2019 ◽  
Vol 8 (5) ◽  
pp. 4588-4597 ◽  
Author(s):  
Yingxue Chen ◽  
Zhiyuan Hong ◽  
Xiaoxin Zhang ◽  
Min Xia ◽  
Qingzhi Yan ◽  
...  
Keyword(s):  
Creep Resistance ◽  
Martensitic Steel ◽  
Vacuum Casting ◽  
Casting Technique

The effect of tempering temperature on the features of phase transformations in the ferritic–martensitic steel EK-181

2014 ◽  
Vol 455 (1-3) ◽  
pp. 496-499 ◽  
Author(s):  
N.A. Polekhina ◽  
I.Yu. Litovchenko ◽  
A.N. Tyumentsev ◽  
Е.G. Astafurova ◽  
V.M. Chernov ◽  
...  
Keyword(s):  
Phase Transformations ◽  
Martensitic Steel ◽  
Tempering Temperature

scholarly journals Analysis of the Mechanical Behavior, Creep Resistance and Uniaxial Fatigue Strength of Martensitic Steel X46Cr13

Materials ◽  
2017 ◽  
Vol 10 (4) ◽  
pp. 388 ◽  
Author(s):  
Josip Brnic ◽  
Sanjin Krscanski ◽  
Domagoj Lanc ◽  
Marino Brcic ◽  
Goran Turkalj ◽  
...  
Keyword(s):  
Fatigue Strength ◽  
Mechanical Behavior ◽  
Creep Resistance ◽  
Martensitic Steel

Influence of tempering temperature upon precipitate phases in a 11%Cr ferritic/martensitic steel

2010 ◽  
Vol 400 (1) ◽  
pp. 94-102 ◽  
Author(s):  
Yin Zhong Shen ◽  
Sung Ho Kim ◽  
Hai Dong Cho ◽  
Chang Hee Han ◽  
Woo Seog Ryu
Keyword(s):  
Martensitic Steel ◽  
Tempering Temperature

scholarly journals ANALYSIS OF HEAT TREATMENT EFFECT ON MICROSTRUCTURAL FEATURES EVOLUTION IN A MICRO-ALLOYED MARTENSITIC STEEL

2016 ◽  
Vol 22 (4) ◽  
pp. 266 ◽  
Author(s):  
Andrea Di Schino
Keyword(s):  
Prior Austenite ◽  
Martensitic Steel ◽  
High Angle Boundary ◽  
Packet Size ◽  
Tempering Temperature ◽  
Grain Sizes ◽  
Austenite Grain ◽  
Heat Treated ◽  
Micro Alloyed Steel ◽  
Prior Austenite Grain

<p>The microstructural evolution of a quenched and tempered medium-C micro-alloyed steel during tempering is analyzed The steel was heat treated in order to develop fully martensitic microstructures after quenching with different prior austenite grain sizes (AGS).</p><p>Main results can be summarized as below:</p><ul><li>A very poor effect of AGS on packet size is found.</li><li>High-angle boundary grains do not significantly grow after tempering; on the contrary, low-angle grain boundaries (cells) move, fully justifying the hardness evolution with tempering temperature. </li></ul>

The measurement of stress in steels of varying microstructure by magnetoacoustic and Barkhausen emission

1987 ◽  
Vol 414 (1847) ◽  
pp. 469-497 ◽  
Keyword(s):  
Magnetic Field ◽  
Domain Wall ◽  
Tensile Stress ◽  
Mild Steel ◽  
Applied Stress ◽  
Wall Motion ◽  
Martensitic Steel ◽  
Tempering Temperature ◽  
Mechanical Hardness ◽  
Wide Range

Magnetoacoustic emission (MAE) and Barkhausen emission (BE) have been measured as a function of applied magnetic field and tensile stress from mild-steel samples in a wide range of heat treatments, to develop a technique to measure stress without prior knowledge of the microstructure. The results are supplemented by measurements of magnetic coercivity and mechanical hardness. MAE is found to decrease with increasing applied stress, whereas the variation of BE is more complicated. The amplitudes of both MAE and BE, as well as the coercivity and hardness are also found to depend on the microstructure to varying degrees. Thus in ferritic-pearlitic and ferritic-pearlitic-martensitic steel MAE is much more sensitive to stress than to changes in microstructure, whereas the sensitivity of BE to stress and microstructure is similar. Above 50 MPa MAE is also more sensitive to stress in ferrite containing cementite, whereas BE both lacks a monotonic dependence upon stress and is sensitive to microstructure. In martensite, however, there is no MAE, the BE increasing monotonically with stress. Tempered martensitic structures give a weak MAE signal that is more sensitive to tempering temperature than applied stress, whereas the BE increases with stress for tempers below 500°C and decreases above. The dependence of MAE and BE on magnetic field are discussed in terms of domain-wall nucleation and irreversible motion in ferrite at higher fields, and irreversible wall motion through martensite or pearlite at lower fields. The results imply that MAE can be used alone to measure stress provided the general form of the microstructure is known; otherwise BE can be used as an additional technique to resolve any ambiguity.

A new approach to improve creep resistance of high Cr martensitic steel

2011 ◽  
Vol 417 (1-3) ◽  
pp. 29-32 ◽  
Author(s):  
Manabu Tamura ◽  
Takuya Kumagai ◽  
Kazuhisa Sakai ◽  
Kei Shinozuka ◽  
Hisao Esaka
Keyword(s):  
Creep Resistance ◽  
Martensitic Steel ◽  
New Approach
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