High performance low cost steels with ultrafine grained ...

1-8-2009· Ultrafine grained ferrite was obtained through tempering cold rolled martensite with an average grain size of 200–400 nm in a low carbon and a microalloyed steel. Thermal and mechanical stability of the two steels was studied. Due to the pinning effect of microalloyed precipitates on the movement of dislocations and grain boundaries, the recrystallization and grain growth rate were …

(PDF) High performance low cost steels with ultrafine ...

High performance low cost steels with ultrafine grained and multi-phased microstructure Article (PDF Available) in Science in China Series E Technological Sciences 52(8):2245-2254 · August 2009 ...

Steel with low cost and high performance | Request PDF

Request PDF | Steel with low cost and high performance | The microstructural evolution of high-Nb steels during hot-working was investigated. It was demonstrated that, the size of ferrite grain ...

Superior ballistic performance of high-nitrogen steels ...

In addition to high strength low alloy steels, many studies have also been carried out on other class of steels such as bainitic steels, secondary hardening steels, auto tempered steels, and nickel free high-nitrogen steels (HNS) etc for potential ballistic applications , , , , , .

High Performance Steel For Highway Bridges

HIGH PERFORMANCE STEEL FOR HIGHWAY BRIDGES Vasant C. Mistry Federal Highway Administration 400 7th Street, S.W. Washington, D.C. 20590 ABSTRACT All steels possess a combination of properties that determines how well steel performs.

A low-alloy high-carbon martensite steel with 2.6 GPa ...

In order to reduce the cost of maraging steels, Jiang et al. created a cheap maraging steel with minimal lattice misfit and high-density nanoprecipitations by the replacement of high-cost alloying elements like Co and Ti with cheap and lightweight Al, which possesses a strength of …

High- Performance Stainless Steels

of the high-performance stainless steels. There are three primary classifications within the high-performance stainless steels. They are the austenitic, ferritic, and duplex (austenitic-ferritic) families. The stainless steels in each family have general similarities, but there is also a wide range of corrosion resistance and other characteristics.

High-Strength Low-Alloy Steels - ASM International

High-strength low-alloy steels include many standard and proprietary grades designed to provide specific desirable combinations of properties such as strength, toughness, formability, weld-ability, and atmospheric corrosion resistance. These steels are not consid-ered alloy steels, even though their desired properties are achieved by the

High- Performance Stainless Steels - Nickel Institute

of the high-performance stainless steels. There are three primary classifications within the high-performance stainless steels. They are the austenitic, ferritic, and duplex (austenitic-ferritic) families. The stainless steels in each family have general similarities, but there is also a wide range of corrosion resistance and other characteristics.

JP2013173970A - High hardness steel of ultrafine ...

The present invention relates to various problems that cannot be solved by the prior art, that is, as steel used for parts such as structures such as buildings and bridges, undercarriage steels for automobiles, and mechanical gears. When manufacturing steel such as thick steel plates, shaped steels, deformed steel bars, steel bars and steel wires, which are excellent in high-grade steel, use ...

Nano-engineered steels for structural applications

Posted: May 10, 2010: Nano-engineered steels for structural applications (Nanowerk Spotlight) Steel is one of the most widely used engineering materials in the world.Its pre-eminent position amongst the engineering materials arises due to the abundance and low cost of its main constituent, i.e. iron, and its amenability to produce a wide variety of engineered microstructures with superior ...

Surface Integrity Analysis when Milling Ultrafine-grained ...

DOI: 10.1590/S1516-14392011005000094 *e-mail: [email protected] Surface Integrity Analysis when Milling Ultrafine-grained Steels Alessandro Roger Rodriguesa*, Oscar Balancinb, Juno Gallegoc, Cleiton Lazaro Fazolo de Assisa, Hidekasu Matsumotoc, Fernando Brandão de Oliveirac, Suzana Regina da Silva Moreirac, Otavio Villar da Silva Netod aMechanical Engineering Department, Engineering …

Researchers develop new chemical boundary engineering ...

High-strength steels, especially those with an ultimate tensile strength beyond 2.0 GPa, generally require a high level of carbon [>0.4 weight % (wt %)] and/or expensive doping elements such as cobalt, nickel, and chromium. Yet, using a high carbon and doping content is not pertinent in construction steels due to weldability and cost constraints.

Advanced High Strength Steel in Auto Industry: an Overview

and cost, have spawned a new group of steels that improve on Engineering, Technology & Applied Science Research Vol. 4, No. 4, 2014, 686-689 688 www.etasr.com Baluch et al.: Advanced High Strength Steel in Auto Industry: an Overview

Revealing the mechanism of ... - Scientific Reports

Hossain, R., Pahlevani, F. & Sahajwalla, V. Revealing the mechanism of extraordinary hardness without compensating the toughness in a low alloyed high carbon steel. Sci …

Surface integrity analysis when milling ultrafine-grained ...

Low-carbon alloyed steel with 10.8 µm (as-received) and 1.7 µm (ultrafine) grain sizes were end milled using the down-milling and dry condition in a CNC machining center. The results show ultrafine-grained workpiece preserves its surface integrity against cutting parameters more than the as-received material.

Technical Review UDC 629 . 12 : 69 . 057 Steels for Marine ...

increasing the steels’ strength and wear resistance (hardness). Looking at the strength of steel, for example, steels with ever-higher tensile strength (TS) have been developed one after another, from 590-N/ mm2 2to 780-N/mm steels, then further to 980-N/mm2 and still stronger steels, making it possible to enhance the performance and

Steel treatment for the future - etmm-online.com

Steels that have undergone Steeltec’s XTP treatment exhibit improved low-temperature toughness. Precipitation-hardened ferrite-pearlite steels can be used at temperatures down to - 60 °C, while bainite steels can cope with temperatures as low as - 100 °C. The low-temperature toughness of unalloyed steels can be improved by up to 30 %.

Ultrahigh Charpy impact toughness (~450J) achieved in …

In order to reveal the toughness of our designed steel, standard Charpy V-notch impact samples were prepared. Ultrahigh Charpy V-notch toughness of 300–450J was achieved with strength as high as ...

Environmental Cracking and Irradiation Resistant …

3-6-2020· AM can provide through-life supply chain (40-60 years) for high-value low-volume components. In the meantime, the capability of generating complex geometries and functional gradient materials will improve the performance, reduce the overall component cost, plant asset management cost and increase the plant reliability by the improvement in materials performance in nuclear …

Ultrahigh Charpy impact toughness (~450J) achieved in …

In order to reveal the toughness of our designed steel, standard Charpy V-notch impact samples were prepared. Ultrahigh Charpy V-notch toughness of 300–450J was achieved with strength as high as ...

Archive | Tata Steel in Europe

This technique offers significant cost savings, compared to conventional armour steels, due to the lower alloy content and the removal of the need for tempering during final heat treatment. The steel's high carbon content and the ability to develop an ultra high strength microstructure mean careful control is required during hot rolling and cooling to avoid cracking.

Science and Technology of Advanced Materials TOPICAL ...

Corrosion resistance of Si Al-bearing ultrafine- ... under a warm slab condition was conducted to obtain low alloy steels with a UFG structure. Slabs of high-Si–Al content ... to create a high-performance steel (Factor 4 steel) without a rare metal by using Si and Al. 3.2.

Ultrastrong steel via minimal lattice misfit and high ...

Ultrastrong steel via minimal lattice misfit and high-density nanoprecipitation Suihe 1Jiang , Hui Wang1, Yuan Wu1, Xiongjun Liu1, ... Fig. 1d reveals precipitation of a very high number density of ultrafine (2–5 nm) spherical precipitates with a highly uniform distribution.

RESEARCH ACTIVITIES ON ADVANCED STEELS IN NERCAST

RESEARCH ACTIVITIES ON ADVANCED STEELS IN NERCAST Han Dong1, ... Ultrafine Grained Steels in EU and NG Steel in China. Based on these research projects, a large amount of research results were published. ... low cost, high performance, and environment benign.

High Carbon Steels :: Total Materia Article

High carbon steels are used for spring materials and high-strength wires. Ultrahigh carbon steels are experimental alloys containing approximately 1.25 to 2.0% C. These steels are thermomechanically processed to produce microstructures that consist of ultrafine, equiaxed grains of ferrite and a uniform distribution of fine, spherical, discontinuous proeutectoid carbide particles.

Enhancing irradiation tolerance of steels via ...

performance for current and advanced reactors, with an established/enhanced understanding of the irradiation effects in ultrafine-grained and nanocrystalline ferritic/martensitic steels. The application of low-cost advanced manufacturing techniques in fabricating currently used materials in LWRs and

PROCESSING OF HIGH-PERFORMANCE ALLOYS BY …

Authors: Pelloux, R.M. Publication Date: Sat Jan 01 00:00:00 EST 1972 Research Org.: Massachusetts Inst. of Tech., Cambridge OSTI Identifier: 4631403

R R R M MR EFFECT OF AUSTEMPERING TEMPERATURES ON ...

arises from the attractive combination of low cost, high hardenability, highhardness (6163 HRc), high yield/tensile ... Steels and High Performance Alloys, USA, vol.1, pp. 380-388, 1987. ... 9. Chakraborty J. and Manna I., Development of ultrafine ferritic sheaves/plates …