Effect of aging treatment on dynamic behavior of Mg-Gd-Y Alloy

Wang, Lin; Qin, Qiao-Yun; Tan, Chengwen; Zhang, Fan; Li, Shukui

doi:10.1007/978-1-4419-8228-5_44

Cited by 1 publication

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…e and f) show that mainly round‐shaped particles containing more Zr appeared in the T6 state. Similar observations were also reported by Wang et al . Based on the Mg–Gd phase diagram and Mg–Y phase diagram, only one single phase solid solution would be expected in the Mg‐10Gd‐3Y‐0.5Zr (GW103K) alloy during solution treatment at 500 °C.…”

Section: Microstructures Of Re–mg Alloyssupporting

confidence: 89%

“…c) seemed to be higher as compared to the regular RE‐rich particles in the T5 alloy due to the ageing process. Wang et al . also reported that the square‐shaped second particles were mostly rich with Gd and Y, and round‐shaped second particles were rich with Zr, which actually concurred the results of the GW103K alloy in both as‐extruded and T5 states.…”

Section: Microstructures Of Re–mg Alloyssupporting

confidence: 62%

See 1 more Smart Citation

Fatigue of rare‐earth containing magnesium alloys: a review

Mirza

Chen

2014

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

A B S T R A C T Lightweighting in ground vehicles is today considered as one of the most effective strategies to improve fuel economy and reduce anthropogenic environment-damaging and climate-changing emissions. Magnesium (Mg) alloy, as a strategic ultra-lightweight metallic material, has recently drawn a considerable interest in the transportation industry to reduce the weight of vehicles due to their high strength-to-weight ratio, dimensional stability, good machinability and recyclability. However, the hexagonal close-packed crystal structure of Mg alloys gives only limited slip systems and develops sharp deformation textures associated with strong mechanical anisotropy and tension-compression yield asymmetry. For the vehicle components subjected to dynamic loading, such asymmetry could exert an unfavourable influence on the material performance. This problem could be conquered through weakening the texture via addition of rare-earth (RE) elements. Thus, a number of RE-containing Mg alloys have recently been developed. To guarantee the structural integrity, durability and safety of highly loaded structural components, understanding the characteristics and mechanisms of cyclic deformation and fatigue fracture of such RE-Mg alloys is of vital importance. In this review, the available fatigue properties including stress-controlled fatigue strength, strain-controlled cyclic deformation characteristics and fatigue crack propagation behaviour are summarized, along with the microstructural change and crystallographic texture weakening in the RE-containing Mg alloys in different forms (cast, extruded and heat-treated states), in comparison with those of RE-free Mg alloys.Keywords fatigue; magnesium alloy; rare-earth element; texture; tension-compression yield asymmetry. N O M E N C L A T U R Eb = fatigue strength exponent (-) c = fatigue ductility exponent (-) E = Young's modulus (GPa) HCF = high cycle fatigue (-) K′ = cyclic strength coefficient (MPa) LCF = low cycle fatigue (-) n′ = cyclic strain hardening exponent (-) N f = number of cycles to failure (-) R ε = strain ratio (-) S = stress (MPa) α, β = phase designations (-) Δε e /2 = elastic strain amplitude (%) Δε p /2 = plastic strain amplitude (%) Δε t /2 = total strain amplitude (%) Δσ/2 = stress amplitude (MPa) ε′ f = fatigue ductility coefficient (-) σ′ f = fatigue strength coefficient (MPa) σ′ y = cyclic yield strength (MPa)

show abstract

Section: Microstructures Of Re–mg Alloyssupporting

confidence: 89%

Section: Microstructures Of Re–mg Alloyssupporting

confidence: 62%