Effects of Boron on Increasing Toughness of High Strength High Manganese Non-Magnetic Steels

Materials ◽  
1992 ◽  
pp. 199-206
Author(s):  
Hideki Tanaka ◽  
Kouzou Fujita ◽  
Koji Shibata
Keyword(s):  
High Strength ◽  
High Manganese

AMPCOLOY 495

Alloy Digest ◽  
1966 ◽  
Vol 15 (11) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Low Temperature ◽  
Physical Properties ◽  
High Strength ◽  
Heat Treating ◽  
Aluminum Bronze ◽  
High Manganese ◽  
Temperature Performance

Abstract AMPCOLOY 495 is a high manganese type of aluminum bronze recommended where high strength and corrosion resistance are required along with good weldability. It is recommended for marine equipment and ship propellers. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness, creep, and fatigue. It also includes information on low temperature performance and corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: Cu-171. Producer or source: Ampco Metal Inc..

Studying the Effect of Manganese Content on TRIP Advanced High Strength Steel

2019 ◽  
Vol 950 ◽  
pp. 50-54 ◽  
Author(s):  
Ahmed El-Sherbiny ◽  
Ahmed Y. Shash ◽  
Mohamed Kamal El-Fawkhry ◽  
Tarek M. El-Hossainy ◽  
Taha Mattar
Keyword(s):  
High Strength Steel ◽  
Retained Austenite ◽  
Manganese Content ◽  
High Strength ◽  
Uniaxial Tensile ◽  
Strain Hardening Exponent ◽  
Uniaxial Tensile Test ◽  
Advanced High Strength Steel ◽  
High Manganese ◽  
The Matrix

TRIP effect containing steel was well reputed by its high mechanical properties among the 1st generation of Advanced High Strength Steel. High Silicon content was well established as an inhibitor for cementite precipitation at para-equilibrium condition. However, the effect of manganese as a powerful stabilizer for retained austenite was not much studied in TRIP-Steel. Thereby, the effect of high manganese content on the TRIP containing steel is studied in this research. As been observed from OM, and XRD results, it was found that as long as increasing Manganese content, the fraction of retained austenite increases. No doubt that enrichment of retained austenite throughout the matrix, beers a great impact on the plastic deformation character of the investigated steels, which was proved by using a uniaxial tensile test and determining the strain hardening exponent.

High Manganese TWIP Steel - Technological Plasticity and Selected Properties

2013 ◽  
Vol 212 ◽  
pp. 87-90 ◽  
Author(s):  
Magdalena Jabłońska ◽  
Grzegorz Niewielski ◽  
Rudolf Kawalla
Keyword(s):  
High Strength ◽  
Mechanical Twinning ◽  
High Manganese ◽  
Rate Analysis ◽  
Railway Industry ◽  
Plastic Forming ◽  
New Type ◽  
High Manganese Steels ◽  
Conducting Research ◽  
Deformation Tests

Over the last few years national as well as international research centres conducting research on the development of high-manganese steels. Some of these materials belong to the group of AHS steels, are characterized by the twinning induced plasticity (TWIP) effect which is a new type of steel possessing together with high strength a great plastic elongation, and an ideal uniform work hardening behavior. It is therefore a good candidate for deep drawing applications in the automobile and railway industry. The article presents the results of researches of TWIP-type austenitic steel in case of determination some of the more important parameters for continuous casting simulation process and the results of tests regarding the influence of strain parameters on sensitivity to plastic forming and deformation strengthening. It has been shown that the researched steel reaches a zero plasticity temperature at 1250°C. The deformation tests indicate its good workability of hot processing within the temperature range of 1100 ÷ 800°C. The relation between yield stress and strain during the hot deformation is typical for the presence of dynamic recrystallization processes. The tested steel has good formability and high mechanical properties, especially when being deformed at a high strain rate. Analysis of the substructure of researched steel was indicate presence of mechanical twinning.

The Influence of Thermomechanical Controlled Processing on Bainite Formation in Low Carbon High Strength Steel

2014 ◽  
Vol 783-786 ◽  
pp. 21-26
Author(s):  
Xiao Jun Liang ◽  
Ming Jian Hua ◽  
Anthony J. DeArdo
Keyword(s):  
Mechanical Properties ◽  
High Strength Steel ◽  
High Strength ◽  
Manganese Steel ◽  
Low Carbon ◽  
High Manganese ◽  
Bainite Transformation ◽  
High Manganese Steel ◽  
Cooling Rates ◽  
Controlled Processing

Thermomechanical controlled processing is a very important way to control the microstructure and mechanical properties in low carbon, high strength steel. This is especially true in the case of bainite formation, where the complexity of the austenite-bainite transformation makes the control of the processing important. In this study, a low carbon, high manganese steel containing niobium was investigated to better understand the roles of austenite conditioning and cooling rates on the bainitic phase transformation. Specimens were compared with and without deformation, and followed by seven different cooling rates ranging between 0.5°C/s and 40°C/s. The CCT curves showed that the transformation behaviors and temperatures are very different. The different bainitic microstructures which varied with austenite deformation and cooling rates will be discussed.

Mechanical Properties of High-Manganese Austenitic TWIP-Type Steel

2014 ◽  
Vol 783-786 ◽  
pp. 27-32 ◽  
Author(s):  
Leszek Adam Dobrzański ◽  
Wojciech Borek ◽  
Janusz Mazurkiewicz
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
High Strength ◽  
Deformation Energy ◽  
Mechanical Twinning ◽  
Austenitic Steels ◽  
Manganese Steel ◽  
Cold Plastic Deformation ◽  
High Plasticity ◽  
High Manganese

Taking into consideration increased quantity of accessories used in modern cars, decreasing car’s weight can be achieved solely by optimization of sections of sheets used for bearing and reinforcing elements as well as for body panelling parts of a car. Application of sheets with lower thickness requires using sheets with higher mechanical properties, however keeping adequate formability. The goal of structural elements such as frontal frame side members, bumpers and the others is to take over the energy of an impact. Therefore, steels that are used for these parts should be characterized by high value of UTS and UEl, proving the ability of energy absorption. Among the wide variety of recently developed steels, high-manganese austenitic steels with low stacking faulty energy are particularly promising, especially when mechanical twinning occurs. Beneficial combination of high strength and ductile properties of these steels depends on structural processes taking place during cold plastic deformation, which are a derivative of SFE of austenite, dependent, in turn on the chemical composition of steel and deformation temperature. High-manganese austenitic steels in effect of application of proper heat treatment or thermo-mechanical treatment can be characterized by different structure assuring the advantageous connection of strength and plasticity properties. Proper determinant of these properties can be plastic deformation energy supply determined by integral over surface of cold plastic deformation curve. Obtaining of high strength properties with retaining the high plasticity has significant influence for the development of high-manganese steel groups and their significance for the development of materials engineering.

scholarly journals Light non-magnetic steels based on Fe – 25 Mn – 5 Ni – Al – C system

2020 ◽  
Vol 63 (1) ◽  
pp. 47-56 ◽  
Author(s):  
L. M. Kaputkina ◽  
A. G. Svyazhin ◽  
I. V. Smarygina ◽  
V. E. Kindop
Keyword(s):  
Phase Structure ◽  
High Strength ◽  
Mechanical Tests ◽  
Austenitic Steels ◽  
High Plasticity ◽  
Cast State ◽  
High Manganese ◽  
Two Phase ◽  
Specific Strength ◽  
Al Content

1.7 %) contents on phase transformations, structure formation processes and mechanical properties of Fe – 25Mn – 5Ni – Al – C steels was studied theoretically and experimentally. The authors have estimated intervals of optimal crystallization regimes and subsequent deformation-thermal effects for obtaining austenitic steels with high specific strength. Measurements of hardness on the section of samples and mechanical tests in a wide interval of temperatures of cold, warm and hot deformation were performed as well as the assessment of phase structure of steels (alloys) on the basis of Fe – 25Mn – 5Ni– – Al – C. In a cast state alloy with 5 % of Al was non-magnetic, i.e. it had austenitic structure; alloys with 10 – 15 % of Al were magnetic with two-phase structure (γ + α). Aluminum considerably increases deformation resistance. At the same time values σ1 and σmax grow, i.e. also deformation hardening grows and softening processes are slowed down. With growth of deformation rate, influence of Al becomes stronger. Austenitic high-manganese alloys with 5 % of Al both with low and with high content of carbon have rather high plasticity and durability, and differ in high stability of austenite. Alloying with nickel increases plasticity. Alloys with Al less than 10 % are rather plastic also in a cast state. High-manganese (from 25 % of Mn) alloys with Al content to 5 – 7 % can be considered as high-strength cold-resistant and heat-resistant with thermally and mechanically stable austenite up to carbon content ~1.5 %.

Development of a High-Strength High-Manganese Stainless Steel for Cryogenic Use

1984 ◽  
pp. 169-176 ◽  
Author(s):  
H. Masumoto ◽  
K. Suemune ◽  
H. Nakajima ◽  
S. Shimamoto
Keyword(s):  
Stainless Steel ◽  
High Strength ◽  
High Manganese

Improvement of Toughness of a High-Strength, High-Manganese Stainless Steel for Cryogenic Use

1986 ◽  
pp. 51-56 ◽  
Author(s):  
K. Suemune ◽  
K. Sugino ◽  
H. Masumoto ◽  
H. Nakajima ◽  
S. Shimamoto
Keyword(s):  
Stainless Steel ◽  
High Strength ◽  
High Manganese

Implementation of a Constitutive Model for the Mechanical Behavior of TWIP Steels and Validation Simulations

2015 ◽  
Vol 651-653 ◽  
pp. 539-544 ◽  
Author(s):  
Andrea Erhart ◽  
André Haufe ◽  
Alexander Butz ◽  
Maksim Zapara ◽  
Dirk Helm
Keyword(s):  
Constitutive Model ◽  
Metal Forming ◽  
Twip Steel ◽  
Manganese Content ◽  
High Strength ◽  
High Manganese ◽  
Macroscopic Deformation ◽  
Twip Steels ◽  
Stress Dependent ◽  
Crash Loading

High manganese content TWinning Induced Plasticity (TWIP) steels are promising for the production of lightweight components due to their high strength combined with extreme ductility, see [1]. This paper deals with the implementation of a constitutive model for the macroscopic deformation behavior of TWIP steels under mechanical loading with the aim of simulating metal forming processes and representing the behavior of TWIP-steel components – for example under crash loading - with the Finite Element code LS-DYNA®and refers to our recently published papers: [2],[4],[5]. Within the present paper we focus on the implementation of the model formulated in [2] and its extension to stress dependent twinning effects.

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