scholarly journals Study on a High-Boron-Content Stainless Steel Composite for Nuclear Radiation

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7004
Author(s):  
Wei-Qiang Sun ◽  
Guang Hu ◽  
Xiao-Hang Yu ◽  
Jian Shi ◽  
Hu Xu ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Power Plants ◽  
Boron Content ◽  
Nuclear Radiation ◽  
304 Stainless Steel ◽  
Optimized Design ◽  
High Boron ◽  
Γ Rays ◽  
Shielding Properties ◽  
Borated Stainless Steel

In this research, a high-boron-content composite material with both neutron and γ rays shielding properties was developed by an optimized design and manufacture. It consists of 304 stainless steel as the matrix and spherical boron carbide (B4C) particles as the functional particles. The content of B4C is 24.68 wt%, and the particles’ radius is 1.53 mm. The density of the newly designed material is 5.17 g·cm−3, about 68.02% of that of traditional borated stainless steel containing 1.7 wt% boron, while its neutrons shielding performance is much better. Firstly, focusing on shielding properties and material density, the content and the size of B4C were optimized by the Genetic Algorithm (GA) program combined with the MCNP program. Then, some samples of the material were manufactured by the infiltration casting technique according to the optimized results. The actual density of the samples was 5.21 g cm−3. In addition, the neutron and γ rays shielding performance of the samples and borated stainless steel containing 1.7 wt% boron was tested by using an 241Am–Be neutron source and 60Co and 137Cs γ rays sources, respectively, and the results were compared. It can be concluded that the new designed material could be used as a material for nuclear power plants or spent-fuel storage and transportation containers with high requirements for mobility.

Investigation on Acoustic Emission Characteristics from Corrosion of Conventional Materials of Primary Pipe in Nuclear Power Plants

2014 ◽  
Vol 487 ◽  
pp. 54-57 ◽  
Author(s):  
Meng Yu Chai ◽  
Li Chan Li ◽  
Wen Jie Bai ◽  
Quan Duan
Keyword(s):  
Stainless Steel ◽  
Acoustic Emission ◽  
Pitting Corrosion ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
316L Stainless Steel ◽  
304 Stainless Steel ◽  
Emission Characteristics ◽  
Research Topics

304 stainless steel and 316L stainless steel are conventional materials of primary pipeline in nuclear power plants. The present work is to summarize the acoustic emission (AE) characteristics in the process of pitting corrosion of 304 stainless steel, intergranular corrosion of 316L stainless steel and weldments of 316L stainless steel. The work also discussed the current shortcomings and problems of research. At last we proposed the coming possible research topics and directions.

Laser Beam Welding of Borated Stainless Steel

2015 ◽  
Vol 775 ◽  
pp. 138-142
Author(s):  
Daniel Drimal ◽  
Frantisek Kolenic
Keyword(s):  
Stainless Steel ◽  
Laser Beam ◽  
Boron Content ◽  
Spent Nuclear Fuel ◽  
Laser Beam Welding ◽  
Production Method ◽  
Aisi 304 ◽  
Weld Joints ◽  
Steel Aisi ◽  
Borated Stainless Steel

Laser beam welding of the absorption tubes made from stainless steel with increased boron content represent suitable production method of storage for spent nuclear fuel. This contribution presents results of weld joints investigation. The experiments were performed on borated stainless steel AISI 304 B6B with boron content 1.74 % wt. Weld joints were prepared by laser beam welding using fiber laser generator and examined by optical and electron microscopy.

JESSOP TYPE 316

Alloy Digest ◽  
1987 ◽  
Vol 36 (8) ◽  
Keyword(s):  
Stainless Steel ◽  
Power Plants ◽  
Elevated Temperatures ◽  
Heat Treating ◽  
304 Stainless Steel ◽  
Petroleum Processing ◽  
Creep Stress ◽  
Processing Power ◽  
Wide Range ◽  
Pharmaceutical Processing

Abstract JESSOP Type 316 is a molybdenum-bearing austenitic chromium-nickel stainless steel with greatly increased resistance to pitting and crevice corrosion in comparison with AISI Type 304 stainless steel. In addition, Jessop Type 316 offers superior creep, stress-to-rupture and tensile strengths at elevated temperatures. Type 316 is suitable for a wide range of applications in chemical and petroleum processing, power plants, pollution-control equipment, pulp and paper plants and food and pharmaceutical processing. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-488. Producer or source: Jessop Steel Company.

Study on Microstructure and Property of High Boron Alloyed Stainless Steel Composite Plate Containing Titanium

2015 ◽  
Vol 1095 ◽  
pp. 193-198 ◽  
Author(s):  
Jing Liu ◽  
Jing Tao Han ◽  
Yan Long Liu
Keyword(s):  
Mechanical Property ◽  
Stainless Steel ◽  
Composite Plate ◽  
Solution Treatment ◽  
The United States ◽  
304 Stainless Steel ◽  
Composite Casting ◽  
High Boron ◽  
Steel Composite ◽  
Hot Rolled

A certain amount of Ti was added into high boron alloyed stainless steel with content 2.25%B, and then high boron alloyed stainless steel composite casting slab with three layers was fabricated , in which central layer is high boron alloyed stainless steel containing Ti and cladding is plain 304 stainless steel without Ti. The microstructure of core and interface and the mechanical property of the composite plate were studied after hot forged, hot rolled and solution treated process respectively. The results show that the boride in as-cast microstructure of core are (Fe,Cr)2B phase with long strip and TiB2 phase with petal shape, moreover the formation of TiB2 phase decreases the amount of (Fe,Cr)2B phase. Two kinds of boride are fully broken after hot rolling and distributed in the form of block uniformly in matrix, and TiB2 phase is more fine uniform. The mechanical property especially plastic performance of high boron alloyed stainless steel composite plate containing Ti after solution treatment is improved significantly, it has reached and surpassed the United States ASTM A887-89 delivery standards.

Shield Performance of High Boron Alloyed Stainless Steel Composite Plate

2012 ◽  
Vol 535-537 ◽  
pp. 651-654 ◽  
Author(s):  
Jing Liu ◽  
Guo Liang Xie ◽  
Ke Zhang ◽  
Jing Tao Han
Keyword(s):  
Stainless Steel ◽  
Thermal Neutron ◽  
Composite Plate ◽  
Boron Content ◽  
Composite Plates ◽  
Core Material ◽  
High Boron ◽  
Steel Composite ◽  
The Difference ◽  
Beam Transmission

The shield thermal neutron performance of two high boron alloyed stainless steel composite plates(HBASSCP) was studied by the method of neutron beam transmission of neutron source reactor. The testing results indicate that the shield performance of the composite material is heavily affected by the size and distribution of the boride. Although the radiationresistance of high boron alloyed stainless steel increases with boron content, but blocky and sparse hypereutectic boride will appear in matrix when boron content is high (more than 3%), and these borides are difficult to be broken during hot deformation, so the thermal neutron is easy to penetrate directly through the space and can not be absorbed effectively. The difference between the shield performance obtained from experiments and the theoretical calculation is small for HBASSCP containing hypoeutectic boride in core material, but it is great for HBASSCP containing hypereutectic boride in core material.

Investigation on Microstructure and Impact Properties of Borated Stainless Steel for High Density Storage Racks

2011 ◽  
Vol 197-198 ◽  
pp. 1520-1523 ◽  
Author(s):  
Fei Xue ◽  
Zhi Feng Luo ◽  
Wei Wei Yu ◽  
Zhao Xi Wang ◽  
Lu Zhang
Keyword(s):  
Stainless Steel ◽  
Nuclear Power ◽  
Power Plants ◽  
Raw Materials ◽  
High Density ◽  
Impact Properties ◽  
Steel Type ◽  
The Matrix ◽  
Borated Stainless Steel ◽  
Storage Racks

In this paper, microstructure and impact properties of borated stainless steel type 304B6-GradeB were investigated, which was used as raw materials of high-density storage racks in some nuclear power plants. Microscopic examinations reveal that a large amount of particles are heterogeneously distributed on austenitic matrix which displayed different shapes in the rolling and thickness directions, the results of XRD and EDS prove that the secondary particle is (Fe,Cr)2B and boron is distributed only in the particles while not in the matrix, fracture analysis all indicates that this borated stainless steel type 304B6-GradeB obviously exhibits features of brittle fracture.

scholarly journals Numerical simulation on residual stresses of stainless steel SS-304 thin welded pipe

2020 ◽  
Vol 53 (7-8) ◽  
pp. 1183-1193
Author(s):  
Hitesh Arora ◽  
Rupinder Singh ◽  
Gurinder Singh Brar
Keyword(s):  
Finite Element ◽  
Stainless Steel ◽  
Residual Stresses ◽  
Power Plants ◽  
Welding Process ◽  
Welding Residual Stress ◽  
304 Stainless Steel ◽  
Welding Parameters ◽  
High Tech ◽  
Ss 304

The major concern in the high tech industries like oil and petroleum industries, automobiles, aeronautical, and nuclear power plants is the control of the defects like distortion in the welded joints and residual stresses occur due to arc welding on the circumferential joints of the thin pipes. Three-dimensional non-linear thermal and thermomechanical numerical simulations are conducted for the tungsten inert gas welding process of SS-304 stainless steel pipes. In this article, numerical analysis of the distribution of the temperature and the welding residual stress fields induced after the welding is done. Study on the effect of the welding heat input by varying the welding parameters (like welding current and welding speed) based on finite element simulations is conduit to examine the results on the residual stresses which is also called as the ‘locked-in’ stresses. The precision of the finite element model is validated for the welding residual stresses. The intention of this study is to provide the information to verify the validity of ongoing process circumferential manufacturing technology for thin-walled pipes, so to avoid the failure of these kinds of structures which are in service because of these intrinsic stresses.

Comparison of Recovery and Recrystallization in Stainless Steel Following Plane-Wave Shock Loading and Explosive Forming

1970 ◽  
Vol 28 ◽  
pp. 428-429 ◽  
Author(s):  
J. A. Korbonski ◽  
L. E. Murr
Keyword(s):  
Stainless Steel ◽  
Shock Loading ◽  
Pressure Pulse ◽  
Shock Pressure ◽  
304 Stainless Steel ◽  
Strain Rates ◽  
Two Dimensional ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304 ◽  
Explosive Forming

Comparison of recovery rates in materials deformed by a unidimensional and two dimensional strains at strain rates in excess of 104 sec.−1 was performed on AISI 304 Stainless Steel. A number of unidirectionally strained foil samples were deformed by shock waves at graduated pressure levels as described by Murr and Grace. The two dimensionally strained foil samples were obtained from radially expanded cylinders by a constant shock pressure pulse and graduated strain as described by Foitz, et al.

Pyrolytic carbon filaments and associated catalytic particles formed in steel tubes

1984 ◽  
Vol 42 ◽  
pp. 662-663
Author(s):  
Y. L. Chen ◽  
J. R. Bradley
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Catalyst Particle ◽  
Pyrolytic Carbon ◽  
Plain Carbon Steel ◽  
304 Stainless Steel ◽  
Hydrocarbon Gases ◽  
Steel Tubes ◽  
Filamentous Carbon ◽  
Carbon Filaments

Considerable effort has been directed toward an improved understanding of the production of the strong and stiff ∼ 1-20 μm diameter pyrolytic carbon fibers of the type reported by Koyama and, more recently, by Tibbetts. These macroscopic fibers are produced when pyrolytic carbon filaments (∼ 0.1 μm or less in diameter) are thickened by deposition of carbon during thermal decomposition of hydrocarbon gases. Each such precursor filament normally lengthens in association with an attached catalyst particle. The subject of filamentous carbon formation and much of the work on characterization of the catalyst particles have been reviewed thoroughly by Baker and Harris. However, identification of the catalyst particles remains a problem of continuing interest. The purpose of this work was to characterize the microstructure of the pyrolytic carbon filaments and the catalyst particles formed inside stainless steel and plain carbon steel tubes. For the present study, natural gas (∼; 97 % methane) was passed through type 304 stainless steel and SAE 1020 plain carbon steel tubes at 1240°K.

Sign in / Sign up

Export Citation Format

Share Document