This study shows that in an atmosphere containing water vapor, the oxide layer on the surface of the 9CrNB steel MarBN (Martensitic 9Cr steel strengthened by Boron and MX Nitrides) was formed by ...

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 …

Boron added to high-speed-cut steels, for example, containing 18%W, 4%Cr and 1%V, enhances their cutting performance, but reduces their forging qualities. ... (1000°C). Boron steel must also be tempered at a lower temperature than other alloy element steels of the same hardenability. Applications. Boron steels are used for a variety of ...

The abrasion properties of improved high boron cast steel, containing 0.3 wt % C and 3.0 wt % B were investigated with regard to the effect of quenching temperature ranging between 900 and 1050°C by Fu et al. . The abrasive wear performance of high carbon and high boron Fe–B alloy is observed in an unsatisfactory level, since these …

1.. IntroductionLow-alloyed steel containing small additions of boron (0.001–0.003 wt.%) [1], [2] has stimulated interest for several decades, due to the excellent combination of hardness and ductility and improved mechanical resistance when submitted to heat treatment.. Boron added to steel results in the formation of the precipitate Fe 23 …

Ultra high-strength Boron steels are alloyed with a small amount of boron, usually less than 1%. Boron steels and Boron steel plate are used frequently in the automotive industry for a variety of applications, including strengthening the elements around car door frames, as dash cross-members or rollover bars, and in reclining seats.

Boron added to high-speed-cut steels, for example, containing 18% W, 4% Cr and 1% V, enhances their cutting performance, but reduces their forging qualities. Addition of boron …

Boron is commonly added to steels to increase hardenability. Boron is added at a very low concentration of 0.0015 to 0.003 percent to increase the hardenability of low carbon steel. Boron is added to molten steel as a ferro-boron which can contain as much as 20 percent boron. The … See more

The hot ductility of Nb-containing steel with boron and titanium addition was higher than the steel without boron and titanium in the temperature range of 900–750°C. Because the formation of ...

This research work studies the effect of boron additions on the hot flow behavior of an advanced ultra-high strength steel (A-UHSS). For this purpose, a low carbon A-UHSS microalloyed with ...

The aim is to address the following: How to add boron to steel (i.e., the manufacturing aspects of boron addition to steel)? What precautions are …

The microstructure of a trial martensitic chromium steel containing a high content of boron (250 ppm) was characterized in detail in the as-tempered and aged conditions. This steel has a similar composition and heat treatment as the TAF steel that still is unsurpassed in creep strength among all 9 to 12 pct chromium steels. …

Born-treated steel, often simply called "boron steel" contains a small amount of ferrous boron that is added to the molten steel during the production …

The dynamic recrystallization behavior of low-carbon steel containing three different amounts of boron (0.002, 0.004, and 0.006 wt%) was systematically investigated under various experimental ...

The possibility of reducing boron from oxide boron-containing systems and its transition to steel are considered in some works [4, 6]. The aim of this work is to study the effect of direct microalloying with boron on the structure and mechanical properties of 08KP, 3SP, 3PS, and 09G2S brands.

The present study examines the cyclic oxidation behaviour at 900 °C in air of sintered 316L austenitic stainless steels containing 1 wt.% yttria or 0.6 wt.% boron.The microstructures of the sintered and oxidized samples were characterised by field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS) …

Stiffened specifications for quality of reinforcement product are dictated by the contemporary market that is expressed in the introduction of new TU and GOST for manufactured products. When switching to the new GOST 34028–2016 enterprises are forced to abandon the use of traditional steel grades and switch to sparingly alloyed …

Microstructural evolution in AISI 304 stainless steel and in a similar steel containing 1% boron during hot torsion was studied by means of quantitative optical microscopy and transmission ...

The precipitates, (Cr,Fe)23(C,B)6 carbides and (Cr,Fe)2B borides, formed along the grain boundaries in a 304 austenitic stainless steel containing boron of 33 ppm after solution treatment at 1100 ...

Boron (B) is extensively used to induce liquid phase sintering (LPS) in powder metallurgy (PM) steels and thereby increase the densification. The alloying elements in B-containing PM steels affect the boride phase, stability of the boride, the temperature of liquid formation, and the progress of LPS.

The effect of boron (B) precipitation behavior on the hot ductility of B containing steel was investigated. Hot ductility of B containing steel was sensitive to the cooling rate (CR) in the range of 1 to 20 K/s (1 to 20 °C/s), whereas that of B-free steel showed little change with CR. Increased CR causes deepening and widening of the …

Since boron-containing stainless steels have a higher thermal neutron absorption capacity than SUS304, they are more suitable materials for such storage. The problem is that the hot and cold workabilities of austenitic stainless steels deteriorate with the addition of boron. It has been extremely difficult to produce boron-containing …

The microstructure of the boron-containing steel is well homogenous distributed, dense, and higher ferrite volume fractions change with boron contents. The boron-containing steel is characterized by resistance to wear, about 117 and 230% of standard AISIM2 tool steel in equilibrium and non-equilibrium production conditions, …

A Gleeble 3800 thermomechanical process physical simulator unit is used to study the structure and mechanical properties of corrosion-resistant steel with a high boron content intended for production of hexagonal pipes for exhausted nuclear fuel storage. Compression tests at room and elevated temperature show that with an increase in test temperature …

Furthermore, the TiB 2 contained more boron content compared with (Cr,Fe) 2 B in per mole, thus leading to a decrease in the total amount of borides in Ti-containing steel. Moreover, despite directly separating out from the molten steel, the TiB 2 type borides were characterized by the granular or short rod-like structures (Figs. 9, 11 ...

Tensile specimens of Type 316L stainless steel, containing boron and having grain sizes in the range 3.1 to 103.8 μm, were deformed at 24, 400 and 700°C at a constant strain rate of 1 × 10 −4 s −1.The flow stress (б) varies with strain (ε) and grain size (d) according to the Hall-Petch (H-P) type relationship σε = a ε + b ε m d −0.5with the H …

ent that boron does not impart ductility to steel. The reduc-tion in area figures for the 1340 and 1038 with boron are virtually identical. However, the ductility of the low car-bon …

Hot ductility of boron containing steel (B steel) with adding Nb (0.03 wt.%) (B–Nb steel) and B–Nb steel with adding Ti (0.0079 wt.%) (B–Nb–Ti steel) was quantified using hot tensile tests.The specimens were solution-treated at 1350 °C and cooled at 20 °C s −1 to tensile test temperature (T) in the range of 750 ≤ T ≤ 1050 °C.

The experimental materials were rolled bars produced by a steel plant. The manufacturing process of the experimental steel is shown in Fig. 1.There were three kinds of 20MnCr5 steels (EN10084 or DIN 17210 standard) with different contents of Nb and B, as shown in Table 1.The sulfur content was set as 0.023–0.025 wt.% in order to obtain good …

Boron-containing steel is obtained by adding boron to low carbon steel and is widely used in the automobile industry, the addition of boron will significantly improve the hardenability and hot ductility of steel. [1,2,3] However, surface cracks, internal cracks, and even bursts often occur during the processing of boron-containing steel.