Hot Rolling Effects on the Microstructure and Chemical Properties of NiTiTa Alloys

Lohan, Nicoleta Monica; Pricop, Bogdan; Popa, Mihai; Matcovschi, Elena; Cimpoeşu, Nicanor; Cimpoeșu, Ramona; Istrate, Bogdan; Bujoreanu, Leandru-Gheorghe

doi:10.1007/s11665-019-04473-6

Cited by 11 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Goss texture has always been a major research subject of grain-oriented silicon steel, and researchers have proposed some hypotheses about the origin of Goss nuclei and made significant progress in studying the formation of Goss-oriented grains during hot rolling. However, the formation and evolution of texture [4,5] during hot rolling [6] is still an important and interesting research field in the manufacturing process [7] of grain-oriented silicon steel [8,9].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Formation of Fiber Texture in the Subsurface Layer of Hot-Rolled Plate of 3.2%Si Grain-Oriented Steel

Zou,

Liu,

Qiu

2023

Metals

View full text Add to dashboard Cite

During the hot rolling process, inhomogeneity microstructure and variations of texture along the thickness direction of hot-rolled plate were formed through shear deformation and recrystallization. The purpose of this study is to investigate the formation and evolution of fiber texture in hot-rolled plate of grain-oriented silicon steel. The results indicate that, in the surface layer s = 1 of hot-rolled plate, a large number of equiaxed grains are formed under high shear force. Under the surface layer, as shear force gradually decreases along the thickness direction, the grain aspect ratio of recrystallized grains gradually increases along the thickness direction of hot-rolled plate, and the shape of the recrystallized grains formed in the subsurface layer and center layer becomes more irregular along the thickness direction. Under the combination of compressive force and decreasing shear force along the thickness direction, fiber texture composed of dozens of specific orientations (such as {112}<111>, {110}<112>, {213}<364>, {441}<104> and Goss orientations) is formed in the subsurface layer s = 0.5~0.9 and gradually evolves along the thickness direction. Therefore, the formation of Goss texture is a small part of fiber texture and is the result of texture evolution in the subsurface layer s = 0.5~0.9.

show abstract

Section: Introductionmentioning

confidence: 99%

A Study on the Formation of Fiber Texture in the Subsurface Layer of Hot-Rolled Plate of 3.2%Si Grain-Oriented Steel

Zou,

Liu,

Qiu

2023

Metals

View full text Add to dashboard Cite

show abstract

“…Shape memory alloys are stimulus-responsive materials with two universal properties: superelasticity and shape memory effect [7,8]. The occurrence of martensite-to-austenite and austenite-to-martensite transitions gives rise to shape memory and superelastic responses [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Most metal-matrix composites are obtained by accumulative roll bonding, a variant of the SPD technique, which also makes it possible to obtain multiple layers [15]. In addition, bimetallic "Ni-Ti/Ni-Ti" shape memory composites obtained by welding present large recoverable strain on heating and cooling [16], and are potential candidates for use as thermomechanical actuators [7,9,17]. In earlier work, the major problem of the formation of a thick brittle intermetallic layer was encountered, in particular in high temperature bonding processes [18].…”

Section: Introductionmentioning

confidence: 99%

Structural Characteristics of Multilayered Ni-Ti Nanocomposite Fabricated by High Speed High Pressure Torsion (HSHPT)

Gurău

Fernandes

et al. 2020

Metals

View full text Add to dashboard Cite

It is generally accepted that severe plastic deformation (SPD) has the ability to produce ultrafinegrained (UFG) and nanocrystalline materials in bulk. Recent developments in high pressure torsion (HPT) processes have led to the production of bimetallic composites using copper, aluminum or magnesium alloys. This article outlines a new approach to fabricate multilayered Ni-Ti nanocomposites by a patented SPD technique, namely, high speed high pressure torsion (HSHPT). The multilayered composite discs consist of Ni-Ti alloys of different composition: a shape memory alloy (SMA) Ti-rich, whose Mf > RT, and an SMA Ni-rich, whose Af < RT. The composites were designed to have 2 to 32 layers of both alloys. The layers were arranged in different sequences to improve the shape recovery on both heating and cooling of nickel-titanium alloys. The manufacturing process of Ni-Ti multilayers is explained in this work. The evolution of the microstructure was traced using optical, scanning electron and transmission electron microscopes. The effectiveness of the bonding of the multilayered composites was investigated. The shape memory characteristics and the martensitic transition of the nickel-titanium nanocomposites were studied by differential scanning calorimetry (DSC). This method opens up new possibilities for designing various layered metal-matrix composites achieving the best combination of shape memory, deformability and tensile strength.

show abstract

The comparison of TiNiNbTa and TiNiNbV SMAs in terms of corrosion behavior, microhardness, thermal and structural properties

Balci

Dağdelen

2022

J Therm Anal Calorim

View full text Add to dashboard Cite

Hot Rolling Effects on the Microstructure and Chemical Properties of NiTiTa Alloys

Cited by 11 publications

References 24 publications

A Study on the Formation of Fiber Texture in the Subsurface Layer of Hot-Rolled Plate of 3.2%Si Grain-Oriented Steel

A Study on the Formation of Fiber Texture in the Subsurface Layer of Hot-Rolled Plate of 3.2%Si Grain-Oriented Steel

Structural Characteristics of Multilayered Ni-Ti Nanocomposite Fabricated by High Speed High Pressure Torsion (HSHPT)

The comparison of TiNiNbTa and TiNiNbV SMAs in terms of corrosion behavior, microhardness, thermal and structural properties

Contact Info

Product

Resources

About