scholarly journals The influence of grain size and precipitation and a boron addition on the hot ductility of a high Al, V containing TWIP steels

2021 ◽  
pp. 1-12
Author(s):  
B. Mintz ◽  
S. Kang ◽  
A. Qaban
Keyword(s):  
Grain Size ◽  
Hot Ductility ◽  
Boron Addition ◽  
Twip Steels

Intrinsic grain size and distribution due to boron addition in CoCrPt alloys

2002 ◽  
Vol 92 (10) ◽  
pp. 6099-6103 ◽  
Author(s):  
Antony Ajan ◽  
I. Okamoto
Keyword(s):  
Grain Size ◽  
Boron Addition

Effect of Trace Boron Addition on the Microstructure and Tensile Elongation of Ti2AlNb-Based Orthorhombic Titanium Alloys

2010 ◽  
Vol 638-642 ◽  
pp. 1439-1444
Author(s):  
Masuo Hagiwara ◽  
Tomoyuki Kitaura
Keyword(s):  
Grain Size ◽  
Room Temperature ◽  
Tensile Elongation ◽  
Boron Addition ◽  
Grain Sizes ◽  
Solution Treated Condition ◽  
Room Temperature Ductility ◽  
Solution Treated ◽  
Treated Condition ◽  
Orthorhombic Titanium

The grain sizes of two kinds of orthorhombic alloys, namely (O+B2) Ti-22Al-11Nb-2Mo -1Fe and (O+2) Ti-27.5Al-13Nb have been successfully reduced by the addition of trace boron (B) (less than 0.12 wt.%). For example, the grain size in the B2 solution-treated condition was reduced from 1 mm to 80 m by the addition of 0.05% B for both alloys. The tensile elongation of Ti-22Al-11Nb-2Mo-1Fe at room temperature and 650C was increased from 0.3% to 4.3%, and from 8.2% to 30.3%, respectively, by the addition of 0.10% B. Ti-27.5Al-13Nb also showed an improved room temperature ductility by the minor B addition.

Influence of B and Ti on hot ductility of high Al and high Al, Nb containing TWIP steels

2013 ◽  
Vol 29 (10) ◽  
pp. 1225-1232 ◽  
Author(s):  
S. E. Kang ◽  
J. R. Banerjee ◽  
E. M. Maina ◽  
B. Mintz
Keyword(s):  
Hot Ductility ◽  
Twip Steels

Hot ductility behaviour of high-Mn TWIP steels

2011 ◽  
Vol 528 (3) ◽  
pp. 1819-1827 ◽  
Author(s):  
A.S. Hamada ◽  
L.P. Karjalainen
Keyword(s):  
Hot Ductility ◽  
Twip Steels

Recrystallisation Behaviour of an Fe-Mn-C-Si-Al TWIP

2012 ◽  
Vol 715-716 ◽  
pp. 649-654 ◽  
Author(s):  
Lieven Bracke ◽  
Nieves Cabañas-Poy
Keyword(s):  
Grain Size ◽  
Cold Rolling ◽  
Annealing Temperature ◽  
Twip Steel ◽  
Rolling Texture ◽  
Annealing Temperatures ◽  
Twip Steels ◽  
Cold Rolled ◽  
Main Components ◽  
Cold Rolling Texture

The static recrystallisation behaviour of cold rolled and annealed TWinning Induced Plasticity (TWIP) steels is important for its industrial production. The recrystallisation kinetics have been determined for an Fe-Mn-C-Si-Al TWIP steel using hardness measurements and microstructure analysis: it has been shown that recrystallisation progresses rapidly with increased annealing temperature. Recrystallisation was faster at higher cold reductions, and a smaller final grain size was observed at lower annealing temperatures. This indicates that the mechanism is nucleation dominated at lower temperatures; grain growth at higher temperatures appears similar for all reductions. The recrystallisation results in a crystallographic texture where the main components of the cold rolling texture are preserved in the final texture after annealing, although some randomisation was observed.

scholarly journals Hot ductility of TWIP steels

2011 ◽  
Vol 27 (1) ◽  
pp. 95-100 ◽  
Author(s):  
S. E. Kang ◽  
A. Tuling ◽  
J. R. Banerjee ◽  
W. D. Gunawardana ◽  
B. Mintz
Keyword(s):  
Hot Ductility ◽  
Twip Steels

The Influence of Boron Additions in Cast Ti-47AL-2Cr-2Nb-0.8B

1994 ◽  
Vol 364 ◽  
Author(s):  
Daniel S. Schwartz ◽  
Donald S. Shih
Keyword(s):  
Grain Size ◽  
Fine Structure ◽  
Phase Composition ◽  
Titanium Aluminide ◽  
Boron Addition ◽  
Intimate Contact ◽  
Β Phase ◽  
Low Degree ◽  
Degree Of Order ◽  
B2 Structure

AbstractMorphology, fine structure, and chemistry of phases formed in cast Ti-47Al-2Cr-2Nb-0.8B due to boron addition were examined in detail. Boron acts an inoculant, refining and stabilizing the cast grain size. A curving ribbon-shaped phase was present throughout the material, related to the ordered phase Ti2AlCr. The ribbon phase had the B2 structure, with a0∼0.318nm. Many ribbons had a low degree of order, i. e. the material was a BCC mixture of Ti, Al, Nb, and Cr. Ribbon phase composition was variable, measured to be: Ti-(20–30)Al-(2–4)Nb-(5–16)Cr. TiB2 was present in small amounts, always in intimate contact with the ribbon phase. A (100)ribbon ‖ {1100}TiB2, (011)ribbon ‖ {1122}TiB2 orientation relationship was observed. It is proposed that the ribbon phase is a remnant of the high-temperature titanium aluminide β-phase, stabilized by dissolved boron.

scholarly journals Hot ductility of high Al TWIP steels containing Nb and Nb-V

2017 ◽  
Vol 33 (14) ◽  
pp. 1645-1656 ◽  
Author(s):  
A. Qaban ◽  
B. Mintz ◽  
S. E. Kang ◽  
S. Naher
Keyword(s):  
Hot Ductility ◽  
Twip Steels
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