Strain Hardening During Mechanical Twinning and Dislocation Channeling in Irradiated 316 Stainless Steels

2009 ◽  
pp. 121-121-13
Author(s):  
T. S. Byun ◽  
N. Hashimoto
Keyword(s):  
Strain Hardening ◽  
Stainless Steels ◽  
Mechanical Twinning

Strain Hardening During Mechanical Twinning and Dislocation Channeling in Irradiated 316 Stainless Steels

2007 ◽  
Vol 4 (8) ◽  
pp. 100680 ◽  
Author(s):  
T. S. Byun ◽  
N. Hashimoto ◽  
R. Lott ◽  
S. W. Dean
Keyword(s):  
Strain Hardening ◽  
Stainless Steels ◽  
Mechanical Twinning

scholarly journals Correlation of Grain Size, Stacking Fault Energy, and Texture in Cu-Al Alloys Deformed under Simulated Rolling Conditions

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Ehab A. El-Danaf ◽  
Mahmoud S. Soliman ◽  
Ayman A. Al-Mutlaq
Keyword(s):  
Grain Size ◽  
Strain Hardening ◽  
Mechanical Twinning ◽  
Al Alloys ◽  
Stacking Fault ◽  
Stacking Fault Energy ◽  
Wide Range ◽  
Orientation Density ◽  
Pure Cu ◽  
Strain Hardening Rate

The effect of grain size and stacking fault energy (SFE) on the strain hardening rate behavior under plane strain compression (PSC) is investigated for pure Cu and binary Cu-Al alloys containing 1, 2, 4.7, and 7 wt. % Al. The alloys studied have a wide range of SFE from a low SFE of 4.5 mJm−2for Cu-7Al to a medium SFE of 78 mJm−2for pure Cu. A series of PSC tests have been conducted on these alloys for three average grain sizes of ~15, 70, and 250 μm. Strain hardening rate curves were obtained and a criterion relating twinning stress to grain size is established. It is concluded that the stress required for twinning initiation decreases with increasing grain size. Low values of SFE have an indirect influence on twinning stress by increasing the strain hardening rate which is reflected in building up the critical dislocation density needed to initiate mechanical twinning. A study on the effect of grain size on the intensity of the brass texture component for the low SFE alloys has revealed the reduction of the orientation density of that component with increasing grain size.

Influence of Ageing on Kinetics and Strain Hardening Behavior of Duplex Stainless Steels

2019 ◽  
Vol 8 (4) ◽  
pp. 1-10 ◽  
Author(s):  
V Shamanth ◽  
K Hemanth ◽  
S Devaraj ◽  
H S Nithin ◽  
S K Pramod Kumar
Keyword(s):  
Strain Hardening ◽  
Stainless Steels ◽  
Duplex Stainless Steels ◽  
Hardening Behavior ◽  
Strain Hardening Behavior

The effects of Si on the mechanical twinning and strain hardening of Fe–18Mn–0.6C twinning-induced plasticity steel

2013 ◽  
Vol 61 (9) ◽  
pp. 3399-3410 ◽  
Author(s):  
Kookhyun Jeong ◽  
Jae-Eun Jin ◽  
Yeon-Seung Jung ◽  
Singon Kang ◽  
Young-Kook Lee
Keyword(s):  
Strain Hardening ◽  
Mechanical Twinning

Effect of Hydrogen Charging on Mechanical Twinning, Strain Hardening, and Fracture of ‹111› and ‹144› Hadfield Steel Single Crystals

2018 ◽  
Vol 21 (3) ◽  
pp. 263-273 ◽  
Author(s):  
E. G. Astafurova ◽  
G. G. Maier ◽  
E. V. Melnikov ◽  
V. A. Moskvina ◽  
V. F. Vojtsik ◽  
...  
Keyword(s):  
Strain Hardening ◽  
Single Crystals ◽  
Mechanical Twinning ◽  
Hadfield Steel ◽  
Hydrogen Charging

Hydrogen Embrittlement of Ultrafine-Grained Austenitic Stainless Steels

2018 ◽  
Vol 54 (1) ◽  
pp. 25-45 ◽  
Author(s):  
E. G. Astafurova ◽  
S. V. Astafurov ◽  
G. G. Maier ◽  
V. A. Moskvina ◽  
E. V. Melnikov ◽  
...  
Keyword(s):  
Martensitic Transformation ◽  
Hydrogen Embrittlement ◽  
Stainless Steels ◽  
Subgrain Size ◽  
Austenitic Stainless Steels ◽  
Mechanical Twinning ◽  
Coarse Grained ◽  
Flow Strength ◽  
Hydrogen Charging ◽  
Ultrafine Grained

Abstract The effect of electrochemical hydrogen-charging on tensile properties, mechanisms of plastic deformation and fracture micromechanisms was studied using two ultrafine-grained (UFG) Cr-Ni austenitic stainless steels. UFG austenitic structures with an average subgrain size of 200 nm for CrNiMo (316L-type) and 520 nm for CrNiTi (321-type) steel were produced using hot-to-warm ABC-pressing. Hydrogen-charging up to 100 hours weakly influences stages of plastic flow, strength properties and elongation of the UFG steels. TEM analysis testifies to hydrogen-assisted partial annihilation and rearrangement of dislocations into dislocation tangles, and to hydrogen-induced variation in ratio of low- and high-angle misorientations in UFG structure of both steels. Hydrogen-alloying promotes mechanical twinning and deformation-induced γ ® e martensitic transformation in the UFG steels under tension. Ultrafine-grained CrNiTi steel with lower stacking fault energy (SFE) is more susceptible to mechanical twinning and deformation-induced γ ® e martensitic transformation in comparison with CrNiMo steel with higher SFE. The micromechanism of the fracture in hydrogen-assisted surface layers of the steels is compositional, grain-size and hydrogen content dependent characteristic. The present results demonstrate that the steels with UFG structure possess higher resistance to hydrogen embrittlement compared to coarse-grained analogues.

Austenitic stainless steels strengthened by phase strain hardening and aging

1981 ◽  
Vol 23 (6) ◽  
pp. 442-445
Author(s):  
V. V. Sagaradze ◽  
I. I. Kositsyna ◽  
A. V. Ozhiganov
Keyword(s):  
Strain Hardening ◽  
Stainless Steels ◽  
Austenitic Stainless Steels
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