Austenitic Grain Size Effect on the Phase Transformation of a 7.0% Cr Steel for Forging

2021 ◽  
Vol 1016 ◽  
pp. 77-81
Author(s):  
Roberto Coletti ◽  
Andrea di Schino ◽  
Sabrina Mengaroni ◽  
Stefano Neri
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Phase Transformation ◽  
Thermal Treatment ◽  
Size Effect ◽  
Chemical Elements ◽  
Grain Size Effect ◽  
Cr Content ◽  
Austenitic Grain Size

In this paper the effect of normalizing and tempering (N&T) thermal treatment on mechanical properties of a novel 7.0% Cr steel for forged components is studied. The main innovation is in the increased hardenability following the higher Cr content with respect to the more common 5% Cr steel allowing to lower the content of other chemical elements aimed to achieve the target mechanical properties. Results show that in the case of 7.0% Cr steel, following the high intrinsic hardenability, the austenitic grain size effect on microstructure after cooling is really poor.

scholarly journals EFFECT OF AUSTENITIC GRAIN SIZE ON THE PHASE TRANSFORMATION OF A NOVEL 6.5% Cr STEEL FOR FORGED COMPONENTS

2021 ◽  
Vol 25 (1) ◽  
pp. 18-23
Author(s):  
Andrea Di Schino
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Chemical Elements ◽  
Austenite Grain Size ◽  
Cr Content ◽  
Austenite Grain ◽  
Prior Austenite Grain Size ◽  
Quenching And Tempering ◽  
Austenitic Grain Size ◽  
Prior Austenite Grain

In this paper the effect of quenching and tempering (Q&T) thermal treatment on mechanical properties of a novel 6.5% Cr steel for forged components is studied. The main innovation is in the increased hardenability following the higher Cr content with respect to the more common 5% Cr steel allowing to lower the content of other chemical elements aimed to achieve the target mechanical properties. Following to the high intrinsic hardenability of such steel based on the Cr content a poor effect of prior austenite grain size should be expected after quenching. Aim of this work is to evaluate such effect and to analyse the dependence of mechanical properties on it.

Grain size effect of pre- and post-coating treated cemented carbides on PVD films' adhesion and mechanical properties

2013 ◽  
Vol 44 (8) ◽  
pp. 697-703 ◽  
Author(s):  
K.-D. Bouzakis ◽  
N. Michailidis ◽  
G. Skordaris ◽  
A. Tsouknidas ◽  
S. Makrimallakis ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Size Effect ◽  
Cemented Carbides ◽  
Grain Size Effect

Grain size effect on the phase transformation temperature of nanostructured CuFe2O4

2011 ◽  
Vol 109 (1) ◽  
pp. 013532 ◽  
Author(s):  
D. Prabhu ◽  
A. Narayanasamy ◽  
K. Shinoda ◽  
B. Jeyadeven ◽  
J.-M. Greneche ◽  
...  
Keyword(s):  
Grain Size ◽  
Phase Transformation ◽  
Size Effect ◽  
Transformation Temperature ◽  
Phase Transformation Temperature ◽  
Grain Size Effect

Grain Size Effect on the Type VT1-0 Alloy Modified by Aluminum Ion Implantation

2015 ◽  
Vol 670 ◽  
pp. 144-151
Author(s):  
Irina Kurzina ◽  
Alisa Nikonenko ◽  
Natalja Popova ◽  
Elena L. Nikonenko ◽  
Mark Kalashnikov
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Ion Implantation ◽  
Size Effect ◽  
Phase State ◽  
Grain Size Effect ◽  
Significant Modification ◽  
Aluminum Ion ◽  
Grain Sizes ◽  
Aluminum Ions

The paper presents results of investigations of α-Ti microhardness modified by aluminum ions having diverse grain sizes, namely: 0.3 μm, 1.5 μm, and 17 μm. These investigations show that the decrease of the grain size and the additional ion implantation result in the significant modification of the structural and phase state of the alloy and its mechanical properties.

scholarly journals Grain Size Effect on Mechanical Properties of Polycrystalline Graphene

2016 ◽  
Vol 29 (6) ◽  
pp. 375-378 ◽  
Author(s):  
Youngho Park ◽  
Sangil Hyun ◽  
Myoungpyo Chun
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Size Effect ◽  
Grain Size Effect

Grain Size Effect on Mechanical Properties of Titanium Alloy

2014 ◽  
Vol 626 ◽  
pp. 548-552 ◽  
Author(s):  
Cho-Pei Jiang ◽  
Zong Han Huang
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Titanium Alloy ◽  
Size Effect ◽  
Annealing Temperature ◽  
Grain Size Effect ◽  
Β Phase ◽  
Commercially Pure ◽  
Α Phase ◽  
Pure Grade

The aim of this study is to investigate the effect of grain size on mechanical properties of commercially pure grade 2 (CP2) titanium bar with a diameter of 5 mm. The results reveal that the microstructure of β-phase forms when the annealing temperature exceeds 800oC. The formation of β-phase leads to reduce the ductility but increase hardness. The strength coefficient, yielding stress and hardness decrease with increasing of grain size when the microstructure of specimen is the α-phase.

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