Effect of deep cryogenic treatment on microstructure, creep and wear behaviors of AZ91 magnesium alloy

Asl, Kaveh Meshinchi; Tari, Alireza; Khomamizadeh, Farzad

doi:10.1016/j.msea.2009.06.003

Cited by 93 publications

(36 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Again, AZ91 was investigated in terms of microstructure, creep, and wear resistance after DCT [12]. The materials were cast at 750 • C melt temperature in steel molds heated to 300 • C. After DCT, the yield strength of the AZ91 samples was slightly higher, 98 MPa compared to 91 MPa in the as-cast state, and the ultimate tensile strength increased after DCT from 170 MPa to 187 MPa.…”

Section: Cryogenic Treatment Of Magnesium Alloysmentioning

confidence: 99%

Influence of Cryogenic Temperatures on the Microstructure and Mechanical Properties of Magnesium Alloys: A Review

Dieringa

2017

Metals

View full text Add to dashboard Cite

Magnesium alloys have been used in the automotive industry and 3C (computer, communication, and consumer electronics) for many years. Their room temperature properties combined with their low density offer a wide range of applications, especially when processed by High Pressure Die Casting (HPDC). The use of magnesium alloys at higher temperatures is well-studied; special creep resistant alloys containing the rare earth elements silver or yttrium are needed. However, when it comes to very low temperatures, only a few studies have been performed to determine the property-microstructure relationship. The possible fields of application at low temperatures are aerospace and satellite parts and tanks for liquefied gases. This review shall not only examine mechanical properties at low temperatures, but also the permanent effects of cyclic or long-lasting cryogenic treatment on the microstructure and mechanical properties. It was found that cryogenic treatment is able to influence the precipitate concentration and grain orientation in some magnesium alloys. Reduction in the number of brittle phases is improving ductility in some cases. It is well-known that high speed tool steels, in particular, can be influenced by cryogenic treatment. Whether this is possible with magnesium alloys and what the mechanisms are shall be reviewed.

show abstract

Section: Cryogenic Treatment Of Magnesium Alloysmentioning

confidence: 99%

Influence of Cryogenic Temperatures on the Microstructure and Mechanical Properties of Magnesium Alloys: A Review

Dieringa

2017

Metals

View full text Add to dashboard Cite

show abstract

“…As a traditional process, CT is widely used for high precision parts, and has been shown to result in significant increase in mechanical properties of steels, which was caused by the reduction in the amount of retained austenite and partly transforming to martensite structure induced by the internal stress of CT [25,26].…”

Section: Introductionmentioning

confidence: 99%

Cryogenic treatment-induced martensitic transformation in Cu–Zr–Al bulk metallic glass composite

Chen

Jiang

et al. 2010

Intermetallics

View full text Add to dashboard Cite

“…Strength, toughness, and hardness of 7075 Al alloy can be enhanced with DCT. Asl et al [20] reported that the mechanical properties of AZ91 magnesium alloy were significantly improved by DCT, which dissolved tiny laminar β particles into the microstructure and facilitated the penetration of the coarse divorced eutectic β phase into the matrix. Moreover, Ma et al [22] noted that the martensitic phase transformation of B2 CuZr phase to B19' CuZr phase induced by DCT in a Cu-Zr-Al bulk metallic glass composite increased its microhardness and ultimate compression fracture strength.…”

Section: Introductionmentioning

confidence: 99%

Deep-cryogenic-treatment-induced phase transformation in the Al-Zn-Mg-Cu alloy

Cheng

Chen

et al. 2015

Int J Miner Metall Mater

View full text Add to dashboard Cite

An aluminum alloy (Al-Zn-Mg-Cu) subjected to deep cryogenic treatment (DCT) was systematically investigated. The results show that a DCT-induced phase transformation varies the microstructures and affects the mechanical properties of the Al alloy. Both Guinier-Preston (GP) zones and a metastable η′ phase were observed by high-resolution transmission electron microscopy. The phenomenon of the second precipitation of the GP zones in samples subjected to DCT after being aged was observed. The viability of this phase transformation was also demonstrated by first-principles calculations.

show abstract

Effect of deep cryogenic treatment on microstructure, creep and wear behaviors of AZ91 magnesium alloy

Cited by 93 publications

References 16 publications

Influence of Cryogenic Temperatures on the Microstructure and Mechanical Properties of Magnesium Alloys: A Review

Influence of Cryogenic Temperatures on the Microstructure and Mechanical Properties of Magnesium Alloys: A Review

Cryogenic treatment-induced martensitic transformation in Cu–Zr–Al bulk metallic glass composite

Deep-cryogenic-treatment-induced phase transformation in the Al-Zn-Mg-Cu alloy

Contact Info

Product

Resources

About