Effect of grain size inhomogeneity of ingot on dynamic softening behavior and processing map of Al-8Zn-2Mg-2Cu alloy

AbstractIn order to investigate the effect of dynamic recrystallization (DRX) behavior on dynamic softening behavior of wrought Ti-10V-2Fe-3Al titanium alloy, a series of laboratory scale isothermal hot compression tests with a height reduction of 60% were performed in a temperature range of 948 K~1023 K in the (

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Hot Tensile Deformation Mechanism and Dynamic Softening Behavior of Ti–6Al–4V Alloy with Thick Lamellar Microstructures

Advanced Engineering Materials ◽

10.1002/adem.201901193 ◽

2020 ◽

Vol 22 (3) ◽

pp. 1901193 ◽

Cited By ~ 15

Author(s):

Y. C. Lin ◽

Qiao Wu ◽

Guo-Dong Pang ◽

Xing-You Jiang ◽

Dao-Guang He

Keyword(s):

Deformation Mechanism ◽

Tensile Deformation ◽

Softening Behavior ◽

Dynamic Softening ◽

Hot Tensile Deformation

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Dynamic softening behavior of TC18 titanium alloy during hot deformation

Materials & Design (1980-2015) ◽

10.1016/j.matdes.2015.01.009 ◽

2015 ◽

Vol 71 ◽

pp. 68-77 ◽

Cited By ~ 64

Author(s):

Y.Q. Ning ◽

B.C. Xie ◽

H.Q. Liang ◽

H. Li ◽

X.M. Yang ◽

...

Keyword(s):

Titanium Alloy ◽

Hot Deformation ◽

Softening Behavior ◽

Dynamic Softening

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Dynamic softening behavior of Al−18Si alloy produced by spray forming

Metals and Materials International ◽

10.1007/bf03027149 ◽

2003 ◽

Vol 9 (5) ◽

pp. 447-451 ◽

Cited By ~ 6

Author(s):

Sung-Il Kim ◽

Byung-Chul Ko ◽

Ho-In Lee ◽

Yeon-Chul Yoo

Keyword(s):

Spray Forming ◽

Softening Behavior ◽

Dynamic Softening

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Novel Nanocrystalline Composites

Materials: Processing, Characterization and Modeling of Novel Nano-Engineered and Surface Engineered Materials ◽

10.1115/imece2002-39371 ◽

2002 ◽

Author(s):

J. Narayan

Keyword(s):

Grain Size ◽

Grain Boundary ◽

Tungsten Carbide ◽

Nickel Aluminide ◽

Processing Technique ◽

High Temperature Strength ◽

Softening Behavior ◽

Boundary Shear ◽

Nanocrystalline Composites

We have developed a novel processing technique to fabricate tungsten carbide (WC) nanocomposites with uniform grain size. In this method, pulsed laser deposition of WC in conjunction with a few monolayers of nickel aluminide (NiAl) is used to control the grain size of nanocrystalline composites. The grain size of WC was controlled by the thickness of tungsten carbide and the substrate temperature. The role of NiAl is to ensure the nucleation of tungsten carbide islands, and it is relatively insoluble in WC. Using this approach, we have fabricated nanocomposites of grain sizes ranging from 6 nm to 35 nm. The hardness of the composite increases with the decrease in grain size, following approximately Hall-Petch relationship. Below a critical value, we observed a softening behavior which has been modeled to be related to intragrain deformation or grain boundary shear. The role of NiAl in grain boundary deformation is of particular interest in strengthening and stabilizing against the grain growth of nanocrystalline composites. The new WC-NiAl composite is expected to have superior high-temperature strength compared to conventional microcrystalline WC-Co composites.

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Effect of Zr content on the precipitation and dynamic softening behavior in Al–Fe–Zr alloys

Materials Characterization ◽

10.1016/j.matchar.2020.110181 ◽

2020 ◽

Vol 162 ◽

pp. 110181 ◽

Cited By ~ 2

Author(s):

Jieyun Ye ◽

Renguo Guan ◽

Hongjin Zhao ◽

Anmin Yin

Keyword(s):

Softening Behavior ◽

Dynamic Softening ◽

Zr Alloys

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Mesoscale modeling of dynamic recrystallization behavior, grain size evolution, dislocation density, processing map characteristic, and room temperature strength of Ti-6Al-4V alloy forged in the (α+β) region

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2017.02.285 ◽

2017 ◽

Vol 708 ◽

pp. 404-413 ◽

Cited By ~ 25

Author(s):

Hiroaki Matsumoto ◽

Vincent Velay

Keyword(s):

Grain Size ◽

Dislocation Density ◽

Dynamic Recrystallization ◽

Room Temperature ◽

Processing Map ◽

Mesoscale Modeling ◽

Recrystallization Behavior ◽

Size Evolution ◽

Dynamic Recrystallization Behavior ◽

Room Temperature Strength

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Influence of Boron on Mechanical Properties and Microstructures of Hot-Rolled Interstitial Free Steel

Materials Science Forum ◽

10.4028/www.scientific.net/msf.495-497.537 ◽

2005 ◽

Vol 495-497 ◽

pp. 537-542 ◽

Cited By ~ 3

Author(s):

S.I. Kim ◽

Shi Hoon Choi ◽

Yeon Chul Yoo

Keyword(s):

Mechanical Properties ◽

High Strength ◽

Recrystallization Temperature ◽

Interstitial Free ◽

If Steel ◽

Softening Behavior ◽

Axial Tensile ◽

Dynamic Softening ◽

Work Hardening Rate ◽

Hot Rolled

This paper examines an effect of boron (B) on dynamic softening behavior, mechanical properties and microstructures for Nb-Ti added high strength interstitial free (IF) steel. For this purpose, IF steels containing 0ppm B, 5ppm B and 30ppm B were chosen. Continuous cooling compression test was performed to investigate dynamic softening behavior. Mechanical properties and microstructures of pilot hot-rolled IF steel sheet were analyzed by uni-axial tensile test and electron back-scattered diffraction (EBSD). It was found that no-dynamic recrystallization temperature (Tndrx) which can be determined from the relationship between flow stress and temperature is a constant of 955oC for all IF steels. However, an addition of B into IF steels increases work hardening rate at the temperature below Tndrx. It was also verified that B retards phase transformation of austenite into ferrite. EBSD analysis revealed that absence of B induces fine ferrite grain size and many high angle grain boundaries.

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