Structures and properties of biocompatible Ti-Zr-Nb-Fe-Mo medium entropy alloys

Liu，Jikui1,2; Zhang，Xiangyun1; Yuan，Zizhou1

2022

10.1016/j.mtcomm.2022.103808

Materials Today Communications   Impact Factor & Quartile

2352-4928

Biomedical implants require high yield strength, low Young's modulus and high ductility synergistic effect. The “stress shielding” caused by the high Young's modulus of most existing high-entropy alloys limited their applications. In this work, a body-centered cubic solid solution TiZrNbFeMo (at.%) medium entropy alloy with low Young's modulus (~63 GPa), high tensile elongation (~25 %), and good corrosion resistance (E = −264 mV, I = 0.15 μA·cm) was designed and fabricated. The admissible elastic strain of cold rolled alloy has increased 50% compared with as-cast alloy (~1.12 %). Furthermore, the coefficient of friction of the cold rolled alloy was higher than the as-cast alloy due to the stress-induced orthorhombic α'' martensite formation. Their mechanical properties can be achieved by tuning the fraction of β-stabilizing elements to obtain a metastable single body-centered cubic phase.

Admissible elastic strain Cold rolled Medium entropy alloy Orthorhombic α'' martensite Young's modulus

EI ; SCI

English

Others

National Natural Science Foundation of China[51661015];National Natural Science Foundation of China[52061024];Natural Science Foundation of Zhejiang Province[LQ20E010002];

Materials Science

Materials Science, Multidisciplinary

WOS:000876408700001

ELSEVIER

20222612279243

Biocompatibility ; Cold rolling ; Corrosion resistance ; Corrosion resistant alloys ; Entropy ; Friction ; High-entropy alloys ; Iron alloys ; Martensite ; Metal cladding ; Niobium alloys ; Titanium alloys ; Zircaloy

Immunology:461.9.1 ; Metallurgy and Metallography:531 ; Metallography:531.2 ; Rolling Mill Practice:535.1.2 ; Metals Corrosion:539.1 ; Titanium and Alloys:542.3 ; Chromium and Alloys:543.1 ; Iron Alloys:545.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Thermodynamics:641.1 ; Materials Science:951

2-s2.0-85132783322

Scopus

1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou,730050,China
2.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Liu，Jikui,Zhang，Xiangyun,Yuan，Zizhou. Structures and properties of biocompatible Ti-Zr-Nb-Fe-Mo medium entropy alloys[J]. Materials Today Communications,2022,32.

Liu，Jikui,Zhang，Xiangyun,&Yuan，Zizhou.(2022).Structures and properties of biocompatible Ti-Zr-Nb-Fe-Mo medium entropy alloys.Materials Today Communications,32.

Liu，Jikui,et al."Structures and properties of biocompatible Ti-Zr-Nb-Fe-Mo medium entropy alloys".Materials Today Communications 32(2022).