Influence of HIP pressure on tensile properties of a 14Cr ODS ferritic steel

Oksiuta, Z.; Oziębło, Artur; Perkowski, Krzysztof; Osuchowski, Marcin; Lewandowska, M.

doi:10.1016/j.fusengdes.2014.01.052

Cited by 36 publications

(11 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such bimodal microstructure was also observed in ODS alloys consolidated via HIP [27] and hot forging. [28] In fact, the absence of a bimodal microstructure in the unmilled alloy and yet its presence after longer milling times would suggest that a bimodal microstructure could develop as a result of the milling process.…”

Section: Microstructural Characteristics Of Spsed 14lmt Alloysupporting

confidence: 58%

“…Although the EBSD micrographs of the 14LMT alloy milled for different durations (5, 10, and 20 h) exhibited a bimodal distribution consisting of coarse grains with a few micron level grains and nanograins with 200-500 nm size, the presence of such heterogeneous microstructure is not limited only in the alloys consolidated via SPS. Such bimodal microstructure was also observed in ODS alloys consolidated via HIP [27] and hot forging. [28] In fact, the absence of a bimodal microstructure in the unmilled alloy and yet its presence after longer milling times would suggest that a bimodal microstructure could develop as a result of the milling process.…”

Section: Microstructural Characteristics Of Spsed 14lmt Alloymentioning

confidence: 59%

See 1 more Smart Citation

Sintering Behavior of Lanthana‐Bearing Nanostructured Ferritic Steel Consolidated via Spark Plasma Sintering

et al. 2015

View full text Add to dashboard Cite

Elemental powder mixture of Fe-14Cr-1Ti-0.3Mo-0.5La2O3 (wt%) composition is mechanically alloyed for different milling durations (5, 10 and 20 h) and subsequently consolidated via spark plasma sintering under vacuum at 950°C for 7 min. The effects of milling time on the densification behavior and density/microhardness are studies. The sintering activation energy is found to be close to that of grain boundary diffusion. The bimodal grain structure created in the milled and sintered material is found to be a result of milling and not of sintering alone. The oxide particle diameter varies between 2 and 70 nm. Faceted precipitates smaller than 10 nm in diameter are found to be mostly La-Ti-Cr-enriched complex oxides that restrict further recrystallization and related phenomena

show abstract

Section: Microstructural Characteristics Of Spsed 14lmt Alloysupporting

confidence: 58%

Section: Microstructural Characteristics Of Spsed 14lmt Alloymentioning

confidence: 59%

Sintering Behavior of Lanthana‐Bearing Nanostructured Ferritic Steel Consolidated via Spark Plasma Sintering

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The pre-alloyed powders are mechanically alloyed with the addition of nanosized oxides and other elements. Hot extrusion (HE), spark plasma sintering (SPS), and hot isostatic pressing (HIP) are the frequently used sintering methods for the consolidation of ODS steel [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ]. The final product of ODS steel is a cladding tube, which means that hot or cold working is inevitable during the fabrication process [ 1 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Hot Deformation Behavior and Microstructure Evolution of 14Cr ODS Steel

Zhao

et al. 2018

Materials

View full text Add to dashboard Cite

Hot deformation tests of 14Cr oxide dispersion strengthened (ODS) steel fabricated by mechanical alloying and hot isostatic pressing (HIP) were performed on a Gleeble-1500D simulator at temperatures ranging from 1050 to 1200 °C with the strain rate range of 0.001−1 s−1. The relationship between the rheological stress and the deformation condition was studied, and a processing map at the true strain of 0.5 was proposed. Microstructure evolution during the deformation process and the effects of deformation conditions on microstructures were also investigated, as well as the stability of nanoparticles. Results show that the 14Cr ODS steel possesses positive strain rate sensitivity. The flow stress increases with the decrease of deformation temperature and the increase of strain rate. The recrystallization process is promoted by the increase of deformation temperature and the reduction of strain rate. Nanoparticles possess excellent stability during the deformation process and are coherent with the matrix.

show abstract

“…However, annealed Fe-1Y-1Ti had only approximately half the hardness of a mechanically alloyed 14YWT ODS steel. [43][44][45][46] Although the dispersion of oxide particle diameters of 20 to 300 nm produced by melt spinning and internal oxidation route were coarser than the 1-to 5-nm-diameter oxides achievable by mechanical alloying under optimum conditions, there is sufficient encouragement to suggest future work might focus on melt spinning of more standard Fe-14Cr-3W-based alloys, with lower concentrations of Y and Ti, and that with further optimization of heat treatment conditions, an alloy that provides useful performance with improved availability in bulk might be developed.…”

Section: Resultsmentioning

confidence: 99%

Development of a Novel Melt Spinning-Based Processing Route for Oxide Dispersion-Strengthened Steels

Hong

Morrison

Zhang

et al. 2017

Metall Mater Trans A

View full text Add to dashboard Cite

Melt spinning of an Fe-5Y and Fe-1Y-1Ti (wt pct) alloy produced a relatively uniform spatial distribution of Y and Ti in solid solution and ribbons with consistent yield (>60 pct by weight), fast processing time (< 10 seconds), good scalability (up to > 100 g feedstock material), and repeatability. Heat treatment in the presence of Fe 2 O 3 as an oxygen source (Rhines pack method) at 973 K validated the potential of forming < 20 nm Y-rich oxides in the Fe-5Y ribbons. Pulverized Fe-1Y-1Y ribbons were consolidated to bulk using the field-assisted sintering technique (FAST) incorporating nano-sized Fe 3 O 4 powder as the oxygen source. After FAST at 1273 K, 50 MPa, and 30 minutes, a comparatively high number density of sub-micron Y and/or Ti-rich oxides were developed. Further formation of fine-scale oxides took place during post-FAST annealing, resulting in an approximate 20 pct increase in hardness at temperatures below 573 K, but with a reduced hardening effect above 673 K due to a small fraction of persistent porosity and mechanically weak prior ribbon boundaries that were decorated with Ti-rich oxides.

show abstract

Influence of HIP pressure on tensile properties of a 14Cr ODS ferritic steel

Cited by 36 publications

References 12 publications

Sintering Behavior of Lanthana‐Bearing Nanostructured Ferritic Steel Consolidated via Spark Plasma Sintering

Sintering Behavior of Lanthana‐Bearing Nanostructured Ferritic Steel Consolidated via Spark Plasma Sintering

Hot Deformation Behavior and Microstructure Evolution of 14Cr ODS Steel

Development of a Novel Melt Spinning-Based Processing Route for Oxide Dispersion-Strengthened Steels

Contact Info

Product

Resources

About