Effect of aluminum content on the decomposition kinetics of supersaturated solid solution in Mg-Al-alloys

Рохлин, Л. Л.; Oreshkina, A.A.

doi:10.1007/bf00715801

Cited by 5 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[64] Another hexagonal structure (a = 0.556 nm, c = 0.521 nm) was also reported for b 0 1 , [59] but it has not been confirmed so far. The orientation relationships for these two precipitate phases are that 0001…”

Section: Phase Equilibria and Precipitationmentioning

confidence: 92%

“…The metastable phase b 0 1 , which is also described as MgZn¢, [52,59] forms as 0001 ½ a rods, whereas the metastable phase b phases were suggested to have a hexagonal structure (a = 0.520 nm, c = 0.857 nm) [56,[60][61][62][63] that is identical to that of MgZn 2 (space group P6 3 /mmc, a = 0.5221 nm, c = 0.8567 nm). [64] Another hexagonal structure (a = 0.556 nm, c = 0.521 nm) was also reported for b 0 1 , [59] but it has not been confirmed so far.…”

Section: Phase Equilibria and Precipitationmentioning

confidence: 99%

See 1 more Smart Citation

Precipitation and Hardening in Magnesium Alloys

Nie

2012

Metall Mater Trans A

1,397

519

View full text Add to dashboard Cite

Magnesium alloys have received an increasing interest in the past 12 years for potential applications in the automotive, aircraft, aerospace, and electronic industries. Many of these alloys are strong because of solid-state precipitates that are produced by an age-hardening process. Although some strength improvements of existing magnesium alloys have been made and some novel alloys with improved strength have been developed, the strength level that has been achieved so far is still substantially lower than that obtained in counterpart aluminum alloys. Further improvements in the alloy strength require a better understanding of the structure, morphology, orientation of precipitates, effects of precipitate morphology, and orientation on the strengthening and microstructural factors that are important in controlling the nucleation and growth of these precipitates. In this review, precipitation in most precipitation-hardenable magnesium alloys is reviewed, and its relationship with strengthening is examined. It is demonstrated that the precipitation phenomena in these alloys, especially in the very early stage of the precipitation process, are still far from being well understood, and many fundamental issues remain unsolved even after some extensive and concerted efforts made in the past 12 years. The challenges associated with precipitation hardening and age hardening are identified and discussed, and guidelines are outlined for the rational design and development of higher strength, and ultimately ultrahigh strength, magnesium alloys via precipitation hardening.

show abstract

Section: Phase Equilibria and Precipitationmentioning

confidence: 92%

Section: Phase Equilibria and Precipitationmentioning

confidence: 99%

Precipitation and Hardening in Magnesium Alloys

Nie

2012

Metall Mater Trans A

1,397

519

View full text Add to dashboard Cite

show abstract

“…The end-on [0 0 0 1] Mg rod similar to ␤ 1 is shown in Fig. 4a [25] reported for the ␤ 1 phase in a binary alloy [4]. However, closer examination of the FFTs from several rods showed that the inter-planar angles, and possibly also the spot distances, do not match those reported for the ␤ 1 phase in a binary alloy in the [0 0 1] precipitate orientation.…”

Section: Precipitates Formed By Ageing At 160 • Cmentioning

confidence: 65%

Characterisation of precipitates in an aged Mg–Zn–Ti alloy

Buha

2009

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…65 During precipitation hardening, MgZn' (or metastable 1 ' phase) forms as rods parallel to the c-axis of the HCP unit cell while metastable 2 ' phase forms as discs parallel to the (0 0 0 2) basal plane of the HCP unit cell. [76][77][78][79][80] It has been reported that the 1 ' phase has a monoclinic structure similar to that of Mg 4 Zn 7 in aged Mg-8 wt.% Zn alloy. 76 Also, the yield strength of quasicrystalline particle reinforced Mg-Zn-Y and Mg-Zn-Y-Zr magnesium alloys was observed to increase with the volume fraction of the quasicrystalline phase based on the strengthening effect of the quasicrystalline particles.…”

Section: Biodegradable Metals (Magnesium Alloys)mentioning

confidence: 94%

Biodegradable Materials for Clinical Applications: A Review

Paramsothy¹,

Ramakrishna²

2015

rev adv sci engng

View full text Add to dashboard Cite

This review article focuses on mechanical properties and composition of degradable polymer, metal (magnesium), ceramic and composite materials with respect to clinical application involving cortical/cancellous bone, dentin and enamel, and ligament, tendon and fascia. On the basis of mechanical property comparison, each class of densified material may be used to substitute cortical bone, may not be used to substitute cancellous bone, may be used to substitute enamel and dentin, may be used to substitute lower limb ligaments and tendons, and may be used to substitute selected upper limb and trunk ligaments and associated tissues. For relatively longer times of recovery from more severe orthopedic trauma, PLLA (poly L-lactic acid) and TMC (trimethyl carbonate) polymers, selected Mg alloys containing zinc (Zn), calcium (Ca) and/or rare-earth (RE) elements, or hydroxyapatite (HA) and tricalcium phosphate (TCP) as crystalline bioceramics apparently are most suitable. Mg alloys or composites have significant potential for clinical application where the ability to bear appropriate load at least in the initial stages of recovery prior to significant resorption and load transfer to new tissue is critical. However, there is no clear opinion at present regarding the toxicity levels of many alloying elements in Mg alloys, particularly concerning RE elements. There is also the potential issue of nanoparticle cytotoxicity concerning alloy nanocomposite degradation invivo. Compared to crystalline bioceramics, the higher index of bioactivity (I B) of amorphous glasses and glass ceramics reflects their superior ability to form a dense interphase and bond strongly with bone, despite their mechanical inferiority. The combination of bioceramic and biodegradable polymer is synergistic based on direct improvement of mechanical property and degradation resistance of the polymer, indirect reduction of foreign body interactions, and direct increase in toughness of the ceramic. Future directions of this field regarding developments on cellulose as a biodegradable material, bone tissue regeneration and engineering, stronger and more corrosion resistant and biocompatible magnesium alloy systems, applicable nanoparticles and nanotechnology, and soft tissue engineering such as vascular tissue engineering are also addressed.

show abstract

Effect of aluminum content on the decomposition kinetics of supersaturated solid solution in Mg-Al-alloys

Cited by 5 publications

References 0 publications

Precipitation and Hardening in Magnesium Alloys

Precipitation and Hardening in Magnesium Alloys

Characterisation of precipitates in an aged Mg–Zn–Ti alloy

Biodegradable Materials for Clinical Applications: A Review

Contact Info

Product

Resources

About