Powder Metallurgy Magnesium Alloys via Roll Compaction Process

2009 ◽  
Vol 50 (578) ◽  
pp. 197-200 ◽  
Author(s):  
Katsuyoshi KONDOH
Keyword(s):  
Powder Metallurgy ◽  
Magnesium Alloys ◽  
Compaction Process ◽  
Roll Compaction

Effect of Multiwalled Carbon Nanotubes (MWCNTs) on the Micro-Hardness and Corrosion Behaviour Mg-Zn Alloy Prepared by Powder Metallurgy

2020 ◽  
Vol 1000 ◽  
pp. 115-122
Author(s):  
Nono Darsono ◽  
Murni Handayani ◽  
Franciska Pramuji Lestari ◽  
Aprilia Erryani ◽  
I Nyoman Gede Putrayasa ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Powder Metallurgy ◽  
Magnesium Alloys ◽  
Corrosion Behaviour ◽  
Density Ratio ◽  
High Strength ◽  
Multiwalled Carbon ◽  
Corrosion Properties ◽  
Biodegradable Implant ◽  
Zn Alloy

Magnesium Alloys have the potential to be applied in the various fields of applications including biomaterials. Magnesium Alloys are an interesting alloy due to its high strength to density ratio. They have been proposed as a biodegradable implant material due to its friendly effect to human body compared to another alloy. Besides its good biodegradable properties, it has a disadvantage of low hardness and corrosion properties. In order to overcome this, it has been combined with other metals such as Zinc (Zn) or Copper (Cu). To increase mechanical properties, we used Carbon Nanotubes (CNT) as reinforcement. Magnesium-Zinc (Mg-xZn) CNTs composites with several compositions was prepared by using powder metallurgy and sintered in the presence of flowing Argon (Ar) gas in tube furnace. Mg-Zn Alloy with the composition of 4% and 6% of Zn and the variation of CNTs at 0.1%, 0.3 %, and 0.5% was also prepared. Hardness testing by using microvickers showed that CNTs can increase the alloy hardness which the maximum hardness is 53.6 HV. The corrosion rates as low as 175.5 mpy exhibited for the Mg-Alloy with the composition of Mg-4-Zn with 0.1 wt.% of CNTs

Roll compaction process modeling: Transfer between equipment and impact of process parameters

2015 ◽  
Vol 484 (1-2) ◽  
pp. 192-206 ◽  
Author(s):  
Nabil Souihi ◽  
Gavin Reynolds ◽  
Pirjo Tajarobi ◽  
Håkan Wikström ◽  
Gunnar Haeffler ◽  
...  
Keyword(s):  
Process Parameters ◽  
Process Modeling ◽  
Compaction Process ◽  
Roll Compaction

scholarly journals Properties of boride-added powder metallurgy magnesium alloys

2009 ◽  
Vol 176 ◽  
pp. 012045
Author(s):  
Atsushi Tanaka ◽  
Syota Yoshimura ◽  
Takuya Fujima ◽  
Ken-ichi Takagi
Keyword(s):  
Powder Metallurgy ◽  
Magnesium Alloys

Electrochemical Dissolution Characteristics of Magnesium Alloy Produced by Roll Compaction Process

2007 ◽  
Vol 561-565 ◽  
pp. 2143-2146 ◽  
Author(s):  
Satoshi Sunada ◽  
Takahito Kawamura ◽  
Katsuyoshi Kondoh ◽  
Hisakimi Notoya ◽  
Kazuhiko Majima
Keyword(s):  
Electrochemical Impedance ◽  
Immersion Test ◽  
Cathodic Current Density ◽  
Mg Alloy ◽  
Electrochemical Dissolution ◽  
Compaction Process ◽  
Cathodic Current ◽  
Structural Morphology ◽  
Polarization Test ◽  
Roll Compaction

The extruded AZ31B Mg alloy specimens using powders fabricated by roll compaction processing (RCP) was prepared, and their corrosion behavior has been investigated through the polarization test, electrochemical impedance spectroscopy test, immersion test and SEM observation in comparison to that of the conventional AZ31B Mg alloy, hereafter shortened as I/M specimen. The extruded AZ31B Mg alloys using RCP powder showed little change in Ecorr irrespective of number of pass cycles. Both anodic and cathodic current density suppression of the RCP specimens became larger with an increase in number of pass cycles. It was also confirmed that the corrosion characteristics of the RCP specimens depended strongly on their structural morphology and that the corrosion resistance of the RCP specimens subjected to 50 pass cycles was nearly same as that of the I/M specimen.

scholarly journals Mechanical Properties of Magnesium Alloys Produced by Powder Metallurgy Method.

1996 ◽  
Vol 43 (11) ◽  
pp. 1350-1353 ◽  
Author(s):  
Hajime Iwasaki ◽  
Kisho Yanase ◽  
Takasuke Mori ◽  
Mamoru Mabuchi ◽  
Kenji Higashi
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Magnesium Alloys ◽  
Powder Metallurgy Method

Microstructural Evolution and Mechanical Properties of AZ91 and SiCp/AZ91 Magnesium Alloys upon Rapid Solidification/Powder Metallurgy Followed by Hot Extrusion

2010 ◽  
Vol 146-147 ◽  
pp. 734-737
Author(s):  
Hui Yu ◽  
Hua Shun Yu ◽  
Zhen Ya Zhang ◽  
Guang Hui Min ◽  
Cheng Chen
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Magnesium Alloys ◽  
Rapid Solidification ◽  
Microstructural Evolution ◽  
Hot Extrusion ◽  
Interface Debonding ◽  
Porosity Level ◽  
Az91 Magnesium ◽  
Sic Particulates

In this study, AZ91 and SiC particulates reinforced AZ91 (SiCp/AZ91) magnesium alloys were successfully fabricated using rapid solidification/powder metallurgy technique followed by hot extrusion. Microstructural evolution and mechanical properties of the monolithic AZ91 and SiCp/AZ91 magnesium alloys were evaluated. SiC particulates were well distributed with only few agglomerated particles. The porosity level and microhardness increased as SiCp content increased because the increased surface area of SiCp, harder ceramic phases and SiCp acted obstacles to the motion of dislocations. In addition, an increase in particulate reinforcement content was observed to decrease mechanical properties of the composite compared with the unreinforced counterpart due to increasing agglomerating regions and porosity, brittle interface debonding between matrix and SiCp.

Superplastic deformation mechanism in powder metallurgy magnesium alloys and composites

2001 ◽  
Vol 49 (11) ◽  
pp. 2027-2037 ◽  
Author(s):  
H. Watanabe ◽  
T. Mukai ◽  
M. Mabuchi ◽  
K. Higashi
Keyword(s):  
Powder Metallurgy ◽  
Magnesium Alloys ◽  
Deformation Mechanism ◽  
Superplastic Deformation

Manufacturing Technique of Magnesium Alloy Sheets by Powder Rolling

2005 ◽  
Vol 488-489 ◽  
pp. 445-448 ◽  
Author(s):  
Guang Sheng Huang ◽  
Ling Yun Wang ◽  
Zhong Wei Zhang ◽  
Guang Jie Huang ◽  
Fu Sheng Pan
Keyword(s):  
Magnesium Alloy ◽  
Magnesium Alloys ◽  
Room Temperature ◽  
Powder Rolling ◽  
Promising Technique ◽  
Manufacturing Technique ◽  
Significant Edge ◽  
Roll Compaction ◽  
Edge Cracking ◽  
Metal And Alloys

Conventional manufacturing processes of metal and alloys sheets are rolling. The poor formability of magnesium alloys at room temperature makes rolling difficult. In the present paper, a manufacturing technique of sheets by powder rolling was employed to fabricate magnesium alloy sheets. The technique consisted of roll compaction, sintering, re-rolling and annealing. Powders of Mg-3 wt% Al mixed using a global mill were roll compacted into green sheets using two counter rotating rolls to the thickness of approximately 0.60 mm. Roll compacted green sheets were sintered at 823 K in argon atmosphere. Sintered green sheets were then re-rolled at ambient temperature to approximately 0.22 mm to obtain fully dense sheets. There was no significant edge cracking observed in the process of cold rolling. It is reasonable to believe that powder rolling is a promising technique for manufacturing magnesium alloys sheets.

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