The microstructural evolution and superplastic behavior at low temperatures of Mg–5.00Zn–0.92Y–0.16Zr (wt.%) alloys after hot extrusion and ECAP process

2012 ◽  
Vol 549 ◽  
pp. 60-68 ◽  
Author(s):  
S.W. Xu ◽  
M.Y. Zheng ◽  
S. Kamado ◽  
K. Wu
Keyword(s):  
Microstructural Evolution ◽  
Low Temperatures ◽  
Hot Extrusion ◽  
Superplastic Behavior ◽  
Ecap Process

scholarly journals STRUCTURE AND PROPERTIES OF AZ31 MAGNESIUM ALLOY AFTER COMBINATION OF HOT EXTRUSION AND ECAP

2017 ◽  
Vol 23 (3) ◽  
pp. 222 ◽  
Author(s):  
Ondřej Hilšer ◽  
Stanislav Rusz ◽  
Wojciech Maziarz ◽  
Jan Dutkiewicz ◽  
Tomasz Tański ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Hot Extrusion ◽  
Az31 Magnesium Alloy ◽  
Initial State ◽  
Fine Grained ◽  
Angular Pressing ◽  
Ecap Process ◽  
Average Grain Size ◽  
Fine Grained Structure

<p>Equal channel angular pressing (ECAP) method was used for achieving very fine-grained structure and increased mechanical properties of AZ31 magnesium alloy. The experiments were focused on the, in the initial state, hot extruded alloy. ECAP process was realized at the temperature 250°C and following route Bc. It was found that combination of hot extrusion and ECAP leads to producing of material with significantly fine-grained structure and improves mechanical properties. Alloy structure after the fourth pass of ECAP tool with helix matrix 30° shows a fine-grained structure with average grain size of 2 µm to 3 µm and high disorientation between the grains. More experimental results are discussed in this article.</p>

scholarly journals Enhanced Corrosion Resistance of Recycled Aluminum Alloy 6061 Chips Using Hot Extrusion Followed by ECAP

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Mohamed A. Taha ◽  
Adel T. Abbas ◽  
Faycal Benyahia ◽  
Hamad F. Alharbi ◽  
B. Guitián ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Material Properties ◽  
Saline Solution ◽  
Electrochemical Impedance ◽  
Hot Extrusion ◽  
Ecap Process ◽  
The Cost ◽  
Alloy 6061 ◽  
Resultant Material

The oxidation of aluminum machining chips retards the successful recycling through the conventional remelting route. A promising approach to overthrow this problem is the utilization of solid state recycling in converting aluminum machining chips directly into semifinished products to eliminate the cost of the remelting process and reduce CO2 emissions. Therefore, in recent work, chips of aluminum alloy (AA6061) were recycled by compaction and then extrusion conducted at 500°C, followed by equal channel pressing (ECAP) to study the resultant material properties and its microstructure. Moreover, the present investigation explores the influence of ECAP after hot extrusion on the corrosive behaviour of the recycled samples in saline solution (NaCl) by electrochemical impedance spectroscopy (EIS) and linear polarization (LP). The results demonstrated a remarkable enhancement of the recycled chips’ properties subjected to hot extrusion followed by the ECAP process. Furthermore, the successive ECAP passes leads to increased film thickness and decreased corrosion rate.

Effects of hot extrusion on microstructural evolution in spray formed superalloy GH738

2014 ◽  
Vol 18 (sup4) ◽  
pp. S4-347-S4-351
Author(s):  
Y. Wang ◽  
W.-Y. Xu ◽  
Z. Li ◽  
G.-Q. Zhang
Keyword(s):  
Microstructural Evolution ◽  
Hot Extrusion

Microstructural evolution of Al–Zn–Mg–Cu–(Sc) alloy during hot extrusion and heat treatments

2004 ◽  
Vol 155-156 ◽  
pp. 1330-1336 ◽  
Author(s):  
Dong-Woo Suh ◽  
Sang-Yong Lee ◽  
Kyong-Hwan Lee ◽  
Su-Keun Lim ◽  
Kyu Hwan Oh
Keyword(s):  
Microstructural Evolution ◽  
Hot Extrusion ◽  
Heat Treatments

Influence of Semi-Solid Casting and Equal Channel Pressing on Microstructure of a Hypoeutectic Al-Si Alloy

2015 ◽  
Vol 819 ◽  
pp. 9-14 ◽  
Author(s):  
Van Thuong Nguyen ◽  
Zuhailawati Hussain ◽  
Abu Seman Anasyida ◽  
Tr.D. Huy ◽  
Indra Putra Almanar
Keyword(s):  
Microstructural Evolution ◽  
Vickers Hardness ◽  
Ecap Processing ◽  
Cast Sample ◽  
Conventional Casting ◽  
Cooling Slope ◽  
Ecap Process ◽  
Semi Solid ◽  
Cooling Slope Casting

The aim of this work was to develop understanding of microstructural evolution of the alloy casted in semi-solid condition using a cooling slope and conventional casting followed by ECAP in a 120odie. Feed materials were prepared by cooling slope casting and conventional casting for ECAP process. The microstructures and Vickers hardness of the worked materials extruded by two routes (A and BC) were evaluated. The primary α-Al phase tends to be elongated after processing by route A. However, its morphology was similar in nature to the microstructure of the as-cast sample after processing by route BC. The Si particles become fragmented during ECAP processing and are more nearly globular in shape and uniform in size than in the as-cast sample. The microstructure of the semi-solid cast ECAPed samples was more homogenous than that of the conventional cast ECAPed sample followed by ECAP for both routes. The hardness of semi-solid cast ECAP samples was also higher than that of conventional cast ECAPed samples for both routes.

Sign in / Sign up

Export Citation Format

Share Document