Solubility of Gaseous Nitrogen in Gamma Iron and the Effect Of Alloying Constituents — Aluminum Nitride Precipitation

Darken, L. S.; Smith, Robert P.; Filer, E. W.

doi:10.1007/bf03397430

Cited by 34 publications

(28 citation statements)

References 7 publications

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“…3,4) Thus, Vanadium (V), Niobium (Nb) and Titanium (Ti), the free energies of whose carbide and nitride formation are relatively low, have been used in commercial carbon steels. For taking advantage of the pinning effect with nitrides of V, Nb and Ti, steels that contain high Nitrogen (N) are supposed to be suitable as base steels.…”

Section: Introductionmentioning

confidence: 99%

Effect of V, Nb and Ti Addition and Annealing Temperature on Microstructure and Tensile Properties of AISI 301L Stainless Steel

Sawada¹,

Adachi²,

Mutoh³

2011

ISIJ Int.

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The effects of V, Nb and Ti additions and the annealing temperatures on the microstructure and tensile properties of AISI 301L stainless steel have been investigated. The grain size of 0.9 μm was obtained by adding 0.5 mass% V with the annealing at 850°C for 30 s, while those of original 301L annealed at 850 and 1 000°C were 2.7 and 9.8 μm, respectively. The grain size decreased as V and Nb increased up to 0.5 and 0.1 mass%, respectively, with the increase in the number density of the precipitate particles. The additions of V over 0.5 mass%, Nb over 0.1 mass% and Ti did not affect the grain size because these additions hardly contributed to the increase in the particle number density. The grain size also decreased with the decrease in the annealing temperature from 1 000 to 850°C. These grain refinements were achieved mainly by the pinning effect of the precipitates and the decrease in the mobility of the grain boundary itself with the decrease in the annealing temperature. The difference of the pinning effect by V, Nb and Ti was explained by the gap of the solubility limit of these elements between the temperatures of the solution treatment and annealing. 0.2% proof stress increased from 400 to 750 N/mm 2 as the amount of V and Nb increased and as the annealing temperature decreased. These strengthenings were explained mainly by the grain refinement in accordance with the Hall-Petch relationship and the influences of other strengthening mechanisms were estimated as quite small.

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Section: Introductionmentioning

confidence: 99%

Effect of V, Nb and Ti Addition and Annealing Temperature on Microstructure and Tensile Properties of AISI 301L Stainless Steel

Sawada¹,

Adachi²,

Mutoh³

2011

ISIJ Int.

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“…Sa) can be divided into two groups. The first group of data, from Darken et al 22 and Narita,25 shows excellent agreement. The second group, from Luyckx et al, 20 Konig et al, 23 Gladman and Pickering 24 and Erasmus 21 shows lower AIN solubility, and the differences between workers are greater.…”

Section: Discussion Of Resultsmentioning

confidence: 84%

Thermodynamic model for precipitation of carbonitrides in high strength low alloy steels containing up to three microalloying elements with or without additions of aluminium

Adrian¹

1992

Materials Science and Technology

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To control austenite grain growth in high strength low alloy (HSLA) steels, additions of micro alloying elements showing chemical affinity for interstitial elements (C and N) are used. These elements have a significant effect on the mechanical properties of the steels. The mechanical properties of HSLA steels depend both on the amounts of the microalloying elements dissolved in the austenite and on undissolved carbonitrides. In the present work, a thermodynamic model enabling calculation of the composition of the austenite as well as the composition and quantity of the carbonitrides in HSLA steels containing up to four microalloying elements is presented. This model can be a useful tool in determining the optimum chemical compositions for steels as well as the heat treatment parameters required to maximise hardenability and to control austenite grain growth.MST/1471

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“…Besides Nb(C,N), AlN with a particle radius of 40-60 nm was also observed at low frequency as precipitate particles in both the Normalized steel and the Annealed steel. Similarly to Nb(C,N), the r* of AlN was also calculated by calculating the volume fraction f from the solubility product 32) and density 33) of AlN. r*(AlN) of the Normalized steel was about 12-14 nm, and r*(AlN) of the Annealed steel was approximately the same, being 10-13 nm.…”

Section: Conventional Theory Of Abnormal Grain Growthmentioning

confidence: 99%

Effect of Annealing Before Cold Forging on the Behavior of Abnormal Grain Growth during Carburizing

Imanami¹,

Yamashita²,

Tomita³

et al. 2017

ISIJ Int.

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Solubility of Gaseous Nitrogen in Gamma Iron and the Effect Of Alloying Constituents — Aluminum Nitride Precipitation

Cited by 34 publications

References 7 publications

Effect of V, Nb and Ti Addition and Annealing Temperature on Microstructure and Tensile Properties of AISI 301L Stainless Steel

Effect of V, Nb and Ti Addition and Annealing Temperature on Microstructure and Tensile Properties of AISI 301L Stainless Steel

Thermodynamic model for precipitation of carbonitrides in high strength low alloy steels containing up to three microalloying elements with or without additions of aluminium

Effect of Annealing Before Cold Forging on the Behavior of Abnormal Grain Growth during Carburizing

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