The Effects of Precipitate Size on the Hardness and Wear Behaviors of Aged 7075 Aluminum Alloys Produced by Powder Metallurgy Route

2016 ◽  
Vol 41 (11) ◽  
pp. 4273-4281 ◽  
Author(s):  
Musa Yildirim ◽  
Dursun Özyürek ◽  
Metin Gürü
Keyword(s):  
Powder Metallurgy ◽  
Aluminum Alloys ◽  
Precipitate Size ◽  
Powder Metallurgy Route

Properties of WZ21 (%wt) alloy processed by a powder metallurgy route

2015 ◽  
Vol 46 ◽  
pp. 115-126 ◽  
Author(s):  
Sandra Cabeza ◽  
Gerardo Garcés ◽  
Pablo Pérez ◽  
Paloma Adeva
Keyword(s):  
Powder Metallurgy ◽  
Powder Metallurgy Route

Powder Metallurgy Aluminum Alloys: Structure and Porosity

2019 ◽  
Author(s):  
Will Judge ◽  
Georges Kipouros
Keyword(s):  
Powder Metallurgy ◽  
Aluminum Alloys ◽  
Material Properties ◽  
Cost Effective ◽  
High Reactivity ◽  
Commercial Production ◽  
Processing Conditions ◽  
Near Net Shape ◽  
And Performance ◽  
Production Conditions

The production of aluminum alloys through powder metallurgy (PM) processes allows for the manufacture of net- or near-net-shape components in a cost-effective and sustainable manner. The high reactivity of aluminum metal, however, complicates PM processing, and special attention must be given to certain steps during production, particularly sintering. PM processing conditions strongly affect the structure and porosity of aluminum PM alloys, which ultimately determine their material properties and performance. In this article, the fundamental aspects of the commercial production of aluminum PM alloys are presented, along with the effects of production conditions on the structure and porosity of aluminum PM alloys. The properties and performance of aluminum PM alloys are then analyzed and interpreted with respect to their structure and porosity.

Fabrication of Biocompatible Ti-Nb-Sn Through Powder Metallurgy Route for Orthopedic Implants

2016 ◽  
pp. 1691-1693
Author(s):  
Rajamallu K. ◽  
Manish K. Niranjan ◽  
Bhupendra Sharma ◽  
Sanjay Kumar Vajpai ◽  
Kei Ameyama ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Orthopedic Implants ◽  
Powder Metallurgy Route

Electrical Discharge Coating by Copper-Tungsten Composite Electrode Prepared by Powder Metallurgy Route

2018 ◽  
pp. 195-224 ◽  
Author(s):  
Anshuman Kumar Sahu ◽  
Siba Sankar Mahapatra
Keyword(s):  
Powder Metallurgy ◽  
Tool Wear ◽  
Electrical Discharge ◽  
Harmony Search ◽  
Dielectric Fluid ◽  
Tool Electrode ◽  
Weight Percentage ◽  
Material Deposition ◽  
Edm Process ◽  
Powder Metallurgy Route

Electrical discharge machining (EDM), a thermo-mechanical machining process, is used in producing complicated intrinsic cavity in difficult-to- machine materials with excellent surface finish. One of the major disadvantage of EDM process is the tool wear, which can be used advantageously for coating purpose. Coating is a unique method of EDM process by the use of electrode prepared via powder metallurgy route. Copper and tungsten powders in weight percentage of 30 and 70 respectively are used for the preparation of the tool electrode by varying the PM process parameters like compaction pressure and sintering temperature. The substrate on which coating is made is chosen as AISI 1040 stainless steel with EDM oil as the dielectric fluid. During coating, influence of parameters like discharge current, duty cycle and pulse-on-time on material deposition rate, tool wear rate and radial under deposition are studied. To find out the best parametric combination Grey Relational Analysis method combined with Harmony Search algorithm has been employed.

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