Effect of ultrasound on the plasticity of high-boron stainless steel

1966 ◽  
Vol 20 (5) ◽  
pp. 511-513
Author(s):  
L. E. Al'shevskii ◽  
Yu. S. Kuz'michev ◽  
L. M. Kurochkina ◽  
I. S. Lupakov ◽  
V. E. Neimark ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Boron

Research on Mechanical Properties of High Boron Alloyed Stainless Steel Composite Plate Containing Titanium

2013 ◽  
Vol 401-403 ◽  
pp. 804-808
Author(s):  
Lin Lin Yuan ◽  
Jing Tao Han ◽  
Jing Liu ◽  
Yan Long Liu
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Composite Plate ◽  
Solution Treatment ◽  
Composite Plates ◽  
Solution Temperature ◽  
Forming Process ◽  
High Boron ◽  
Steel Composite ◽  
Ti Content

High boron alloyed stainless steel composite plates with different Ti content by cladding casting and hot forming process were fabricated. The mechanical properties of composite plates were analyzed after solution treatment. The results show that the composite plate has optimal microstructure and properties at 1100°C solution temperature, holding for 4h.The comprehensive properties of the composite plates are improved with the increase of Ti content, but excess Ti content can lower the plasticity. The elongation and the tensile strength of composite plate reaches 29% and 527MPa respectively, the mechanical properties can meet and exceed the supply standard requirements in ASTM A887-89 of U.S. when the reasonable content of Titanium is about 5%.

Effect of Titanium on Microstructure and Phase Composition of High Boron Alloyed Stainless Steel

2012 ◽  
Vol 535-537 ◽  
pp. 738-741 ◽  
Author(s):  
Jing Liu ◽  
Ke Zhang ◽  
Jing Tao Han
Keyword(s):  
Stainless Steel ◽  
Phase Composition ◽  
Hot Rolling ◽  
Induction Furnace ◽  
Rolling Process ◽  
Vacuum Induction Furnace ◽  
Boride Phase ◽  
Hot Rolling Process ◽  
High Boron ◽  
Ti Content

High boron alloyed stainless steel(HBASS) with different Ti content were fabricated by vacuum induction furnace and their microstructure and boride phase were analyzed. The boride phase of HBASS do not contain Ti element is mainly (Fe,Cr)2B phase with slender rod-shape. After adding Ti into steel, because Ti and B preferentially combines into TiB2 phase with petals or small block shape which can stop the formation of hard and brittle (Fe,Cr)2B, so the number of (Fe,Cr)2B phase is reduced. And after adding Ti, many crisscross cracks appeared in internal large (Fe,Cr)2B phase, which will be effective to break into small pieces of boride to improve steel plasticity and shielding thermal neutron performance during hot rolling process.

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.

Analysis of Boride Phase Composition in High Boron Alloyed Stainless Steel Containing Titanium

2014 ◽  
Vol 941-944 ◽  
pp. 226-231 ◽  
Author(s):  
Lin Lin Yuan ◽  
Jing Tao Han ◽  
Jing Liu
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Phase Composition ◽  
Matrix Composition ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Boride Phase ◽  
High Boron ◽  
Working Performance ◽  
Ti Content

Hard and brittle (Fe,Cr)2B phase caused by excess boron in high boron alloyed stainless steel has adverse effects on the hot working performance and mechanical properties of material. Adding Ti into high boron alloyed stainless steel can improve the type, morphology and distribution of boride phase. The results show that TiB2 phase with petals or small block shape forms after adding Ti into high boron alloyed stainless steel, and as the increase of Ti content, TiB2 phase replaces (Fe, Cr)2B gradually. Moreover, the petal-like TiB2 phase becomes smaller and more granular after high temperature deformation, and the segregation of matrix composition is significantly weakened by the formation of TiB2 phase.

Effects of ultrasound on the plasticity of high boron stainless steel

Ultrasonics ◽  
1967 ◽  
Vol 5 (2) ◽  
pp. 129
Keyword(s):  
Stainless Steel ◽  
High Boron

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.

Boride precipitation and mechanical behaviour of high boron stainless steel with boron and titanium additions

2015 ◽  
Vol 51 (4) ◽  
pp. 332 ◽  
Author(s):  
Xiao Qiu Zheng ◽  
Ying Liu ◽  
Jun Li ◽  
Lin He ◽  
Lai Chang Zhang
Keyword(s):  
Stainless Steel ◽  
Mechanical Behaviour ◽  
High Boron

Effect of Cr and Ni Contents on Microstructure and Properties of High Boron Stainless Steel Composite Plate

2012 ◽  
Vol 535-537 ◽  
pp. 883-887 ◽  
Author(s):  
Jing Liu ◽  
Ke Zhang ◽  
Guo Liang Xie
Keyword(s):  
Stainless Steel ◽  
Composite Plate ◽  
Solution Treatment ◽  
Composite Plates ◽  
Core Material ◽  
Boride Phase ◽  
Matrix Microstructure ◽  
The Matrix ◽  
High Boron ◽  
Steel Composite

Two high boron alloyed stainless steel composite plates(HBASSCP) which have different Cr and Ni contents were prepared by composite casting and hot rolling process. By means of metallographic observation and x-ray diffraction analysis, the matrix microstructure of calding and core is ferrite and the boride phase in core material is identified as brittle Fe2B for HBASSCP which has lower Cr and Ni contents, while the matrix microstructure of calding and core and the boride phase are mainly austenite and (Fe,Cr)2B respectively for HBASSCP which has higher level of Cr and Ni contents. After solution treatment, ferrite had changed into martensite which do not have plasticity for composite plate with lower Cr and Ni contents, but the elongation and the tensile strength of HBASSCP with high contents of Ni and Cr has reached up to 12.45 % and 558MP respectively. The mechanical properties has met ASTM standard specification for borated stainless steel plate for nuclear application.

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