Mechanical Properties of Magnesium Alloys Processed by Semi‐Solid Casting

Wagener, Wolfram; Hartmann, Dierk; Lehnert, F.; Scholz, K.

doi:10.1002/3527607552.ch46

Cited by 3 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mechanical properties of the SC components can be positively influenced compared to the gravity cast and die cast ones [ 26 ]. The SC technique was described in the literature in several modifications (from completely solidified alloys to SC of semisolid metal) [ 27 , 28 ]. With the semisolid melt in the SC process, a positive influence on the tensile properties and elongation to fracture, especially when the SC is followed by some thermal treatment, can be observed.…”

Section: Introductionmentioning

confidence: 99%

Influence of Processing Techniques on Microstructure and Mechanical Properties of a Biodegradable Mg-3Zn-2Ca Alloy

et al. 2016

View full text Add to dashboard Cite

New Mg-3Zn-2Ca magnesium alloy was prepared using different processing techniques: gravity casting as well as squeeze casting in liquid and semisolid states. Materials were further thermally treated; thermal treatment of the gravity cast alloy was additionally combined with the equal channel angular pressing (ECAP). Alloy processed by the squeeze casting in liquid as well as in semisolid state exhibit improved plasticity; the ECAP processing positively influenced both the tensile and compressive characteristics of the alloy. Applied heat treatment influenced the distribution and chemical composition of present intermetallic phases. Influence of particular processing techniques, heat treatment, and intermetallic phase distribution is thoroughly discussed in relation to mechanical behavior of presented alloys.

show abstract

Section: Introductionmentioning

confidence: 99%

Influence of Processing Techniques on Microstructure and Mechanical Properties of a Biodegradable Mg-3Zn-2Ca Alloy

et al. 2016

View full text Add to dashboard Cite

show abstract

“…[10,51,54] Considering the second approach by improving the bulk material, the focus should be set on reducing the casting defects by using new or optimised casting techniques. Advanced or new processes, like vacuum pressure die casting [22] or semi-solid processing (Thixocasting, Thixomolding, NewRheocasting) [56,57] respectively, enable a reduction of porosity in cast components, increasing the fatigue life. Reducing the porosity, additionally decreases the scatter and therefore improving the reliability.…”

Section: Improvement Of Fatigue Behaviourmentioning

confidence: 99%

Fatigue of Magnesium Alloys

Potzies¹,

Kainer²

2004

Adv Eng Mater

174

View full text Add to dashboard Cite

Magnesium alloys show a high specific strength and are therefore increasingly used for light‐weight constructions in transportation industry.[1,2] To predict the behaviour of the material under the influence of cyclic loading it is vital to understand the fatigue behaviour of magnesium alloys. Only when understood properly, it is possible to fully apply the potential weight reduction by using magnesium alloys. A very important aspect in fatigue of magnesium alloys is the influence of a corrosive media and elevated temperatures, of which both are relevant in automotive applications. These two factors tend to have deleterious effects on magnesium alloys and therefore also have to be considered in investigations on the fatigue behaviour of magnesium alloys.

show abstract

“…The processing and forming operation is done with semiautomated equipment [5] using a 5,800 kN high pressure die casting machine with a static maximum force at the hy- mogeneous in size and distribution ( figure 6). Strong effects of segregation cannot be detected.…”

Section: Processing and Formingmentioning

confidence: 99%

Advanced Processing and Properties of Thixotropic Formed Components Based on Partially Melted Magnesium

Wagener

2004

steel research international

Self Cite

View full text Add to dashboard Cite

Contrary to the manufacture of aluminium components in the semi-solid, thixotropic state the production of magnesium based components by semi-solid techniques is still uncommon. For this reason, the advantage of this production method is analysed with regard to the commercial magnesium alloy AZ80. The objective of this research is semi-solid-casting (SSG) of AZ80 for the production of a light weight component in near-net-shape quality and with advanced properties. Using extruded primary feedstock material, the behaviour and the advantages are investigated. Billets with a weight of up to 2 kg are heated up into a semi-solid state. To avoid any risk of self-ignition of the material an automatic, temperature controlled induction heating system is used. To achieve an optimum homogeneous grain structure the induction heating power is varied making use of a process control system based on power-time-curves. The heated billets are transported in the soft semi-solid condition from the induction heating system to a die casting machine to produce components with wall thickness' between 2 and 10 mm. After forming of the components, the influence of heat treatment on the grain structure and especially on the mechanical properties is determined to provide parts with optimised characteristics.To compare the properties of the special globular grain and microstructure, the results of various static and dynamic tests are analysed. It is found that components can be manufactured with a magnesium alloy in a thixotropic state in near-net-shape quality, with low porosity and with excellent mechanical properties like elongation of up to 15%.

show abstract

Mechanical Properties of Magnesium Alloys Processed by Semi‐Solid Casting

Cited by 3 publications

References 0 publications

Influence of Processing Techniques on Microstructure and Mechanical Properties of a Biodegradable Mg-3Zn-2Ca Alloy

Influence of Processing Techniques on Microstructure and Mechanical Properties of a Biodegradable Mg-3Zn-2Ca Alloy

Fatigue of Magnesium Alloys

Advanced Processing and Properties of Thixotropic Formed Components Based on Partially Melted Magnesium

Contact Info

Product

Resources

About