Ultrafine grained Ti-based composites with ultrahigh strength and ductility achieved by equiaxing microstructure

2015 ◽  
Vol 79 ◽  
pp. 1-5 ◽  
Author(s):  
L.H. Liu ◽  
C. Yang ◽  
F. Wang ◽  
S.G. Qu ◽  
X.Q. Li ◽  
...  
Keyword(s):  
Ultrahigh Strength ◽  
Ultrafine Grained ◽  
Strength And Ductility

Processing, Strength and Ductility of Bulk Nanostructured Metals Produced by Sever Plastic Deformation: An Overview

2009 ◽  
Vol 633-634 ◽  
pp. 131-150 ◽  
Author(s):  
A. Mashreghi ◽  
L. Ghalandari ◽  
M. Reihanian ◽  
M.M. Moshksar
Keyword(s):  
Plastic Deformation ◽  
Nanocrystalline Metals ◽  
Nanostructured Metals ◽  
Ultrahigh Strength ◽  
Nano Scale ◽  
Ultrafine Grained ◽  
Structural Applications ◽  
Sever Plastic Deformation ◽  
Processing Techniques ◽  
Strength And Ductility

Nanostructured metals which have nano-scale microstructure are classified into ultrafine grained metals and nanocrystalline metals. In recent years, many processing techniques have been developed for producing nanostructured metals. Nanostructured metals possess ultrahigh strength but the low ductility is an important limitation on development of these materials for structural applications. This paper overviews various methods of producing nanostructured metals and recent investigations of strength and ductility of nanostructured metals processed by sever plastic deformation.

Strength and ductility in ultrafine-grained wrought aluminum alloys

2013 ◽  
Vol 49 ◽  
pp. 520-524 ◽  
Author(s):  
Weilin Yan ◽  
Xiaohong Liu ◽  
Jinyuan Huang ◽  
Lin Chen
Keyword(s):  
Aluminum Alloys ◽  
Ultrafine Grained ◽  
Wrought Aluminum Alloys ◽  
Wrought Aluminum ◽  
Strength And Ductility

Strength and Ductility of Ultrafine Grained ZKX600 Mg Alloy

2016 ◽  
pp. 245-250
Author(s):  
Ruixiao Zheng ◽  
Tilak Bhattacharjee ◽  
Akinobu Shibata ◽  
Akinobu Shibata ◽  
Taisuke Sasaki ◽  
...  
Keyword(s):  
Mg Alloy ◽  
Ultrafine Grained ◽  
Strength And Ductility

Enhanced Strength and Ductility in Hypo-Eutectoid Cu-Al Alloys through ECAP and Annealing

2008 ◽  
Vol 584-586 ◽  
pp. 315-326 ◽  
Author(s):  
Shao Hua Xia ◽  
L.V. Vychigzhanina ◽  
Jing Tao Wang ◽  
Igor V. Alexandrov
Keyword(s):  
Heat Treatment ◽  
Volume Fraction ◽  
Tensile Deformation ◽  
Al Alloys ◽  
Optimal Combination ◽  
Tensile Yield Strength ◽  
Angular Pressing ◽  
Tensile Deformation Behavior ◽  
Ultrafine Grained ◽  
Strength And Ductility

In the present investigation, a bimodal structured alloy with ultrafine-grained (UFG) eutectoid matrix embedded with micrometer-grained pre-eutectoid phase was introduced into the hypo-eutectoid Cu-10.8wt.%Al and Cu-11.3wt.%Al alloys by means of pre-pressing heat-treatment, equal-channel-angular pressing (ECAP) and subsequent annealing. Different size of micrometer grained pre-eutectoid phase was obtained by controlling the cooling rate during pre-pressing heat-treatment of the hypo-eutectoid alloy. The tensile deformation behavior of the developed microstructures is characterized by a maximum tensile yield strength up to 800MPa, which is three times higher than that of the un-treated alloy. It is found that the size of the micrometer grained pre-eutectoid phase is critical to the improvement of the bimodal structured alloy. With larger micrometer grained pre-eutectoid phase, no obvious improvement in plastic elongation was observed with the increase of volume fraction of the pre-eutectoid phase from 20% to 40%, but a decrease in the yield tensile strength was observed. An optimal combination of strength and ductility was obtained particularly in those samples embedded with small-sized micrometer-grained pre-eutectoid phase, which provide extra strain gradient hardening effect.

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