The effect of titanium and nitrogen contents on the microstructure and mechanical properties of plain carbon steels

Wang, Shyi-Chin

doi:10.1016/0921-5093(91)90298-2

Cited by 15 publications

(2 citation statements)

References 8 publications

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“…By contrast, Wang 39 advised that the grain refinement derived from TiN grain boundary pinning with small addition of Ti is most effective at around the stoichiometric Ti/N ratio (3?42). If Ti content was over the stoichiometric ratio, a precipitation hardening effect from TiC could result in an increase in strength but a deterioration of toughness.…”

Section: Optimum Ti/n Ratio For Toughnessmentioning

confidence: 99%

Role of Ti and N in line pipe steel welds

Zhu

Kuzmikova

Marimuthu

et al. 2013

Science and Technology of Welding and Joining

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High strength line pipe steels exhibit a combination of excellent toughness and high strength achieved through microalloy additions and thermomechanical controlled processing. During welding, severe thermal cycles experienced by the heat affected zone (HAZ) result in precipitate coarsening/dissolution and subsequent grain growth. This significantly reduces toughness in this region. It is well known that small Ti additions are utilised to control grain growth in the HAZ through grain boundary pinning action of TiN precipitates. Because of a lack of systematic and controlled study, it has been difficult to quantify the effect of TiN in the variety of steels. Hence, the optimum levels proposed in the literature are inconsistent and even contradict each other when compared. This paper mainly reviews the effect of different levels of Ti, N and Ti/N ratios on steels and pipes manufactured using different processes, with particular focus on the HAZ toughness.

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Section: Optimum Ti/n Ratio For Toughnessmentioning

confidence: 99%

Role of Ti and N in line pipe steel welds

Zhu

Kuzmikova

Marimuthu

et al. 2013

Science and Technology of Welding and Joining

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“…The authors [ 12 , 14 , 25 , 28 , 29 , 30 , 31 ] studied the influence of Ti on steel properties. The strengthening effect on the yield strength resulting from grain-size refinement is considered to be effective if the Ti content is 0.8 wt.%.…”

Section: Introductionmentioning

confidence: 99%

Overview of HSS Steel Grades Development and Study of Reheating Condition Effects on Austenite Grain Size Changes

Kvačkaj

Bidulská

Bidulský³

2021

Materials

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This review paper concerns the development of the chemical compositions and controlled processes of rolling and cooling steels to increase their mechanical properties and reduce weight and production costs. The paper analyzes the basic differences among high-strength steel (HSS), advanced high-strength steel (AHSS) and ultra-high-strength steel (UHSS) depending on differences in their final microstructural components, chemical composition, alloying elements and strengthening contributions to determine strength and mechanical properties. HSS is characterized by a final single-phase structure with reduced perlite content, while AHSS has a final structure of two-phase to multiphase. UHSS is characterized by a single-phase or multiphase structure. The yield strength of the steels have the following value intervals: HSS, 180–550 MPa; AHSS, 260–900 MPa; UHSS, 600–960 MPa. In addition to strength properties, the ductility of these steel grades is also an important parameter. AHSS steel has the best ductility, followed by HSS and UHSS. Within the HSS steel group, high-strength low-alloy (HSLA) steel represents a special subgroup characterized by the use of microalloying elements for special strength and plastic properties. An important parameter determining the strength properties of these steels is the grain-size diameter of the final structure, which depends on the processing conditions of the previous austenitic structure. The influence of reheating temperatures (TReh) and the holding time at the reheating temperature (tReh) of C–Mn–Nb–V HSLA steel was investigated in detail. Mathematical equations describing changes in the diameter of austenite grain size (dγ), depending on reheating temperature and holding time, were derived by the authors. The coordinates of the point where normal grain growth turned abnormal was determined. These coordinates for testing steel are the reheating conditions TReh = 1060 °C, tReh = 1800 s at the diameter of austenite grain size dγ = 100 μm.

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Effects of Ti and Nb on the Grain Refinement and Mechanical Properties of AISI 4145 Steel

Seo¹,

Lee

2018

Trans Indian Inst Met

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The effect of titanium and nitrogen contents on the microstructure and mechanical properties of plain carbon steels

Cited by 15 publications

References 8 publications

Role of Ti and N in line pipe steel welds

Role of Ti and N in line pipe steel welds

Overview of HSS Steel Grades Development and Study of Reheating Condition Effects on Austenite Grain Size Changes

Effects of Ti and Nb on the Grain Refinement and Mechanical Properties of AISI 4145 Steel

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