다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

Interpretation of X-ray Powder Diffraction Patterns . By H. Lipson and H. Steeple. Pp. viii + 335 + 3 plates. (Mac-millan: London; St Martins Press: New York, May 1970.) £4.

X-Ray Diffraction

http://csmres.co.uk/cs.public.upd/article-downloads/Allyn-Download-6.pdf

Biomedical coatings on magnesium alloys - a review.

Zinc is proposed as an exciting new biomaterial for use in bioabsorbable cardiac stents. Not only is zinc a physiologically relevant metal with behavior that promotes healthy vessels, but it combines the best behaviors of both current bioabsorbable stent materials: iron and magnesium. Shown here is a composite image of zinc degradation in a murine (rat) artery.

Zinc Exhibits Ideal Physiological Corrosion Behavior for Bioabsorbable Stents

Novel Magnesium Alloys Developed for Biomedical Application: A Review

In β titanium alloys, the β stabilizers segregate easily and considerable effort has been devoted to alleviate/eliminate the segregation. In this work, instead of addressing the segregation problems, the segregation was utilized to develop a novel microstructure consisting of a nanometre-grained duplex (α+β) structure and micrometre scale β phase with superior mechanical properties. An as-cast Ti-9Mo-6W alloy exhibited segregation of Mo and W at the tens of micrometre scale. This was subjected to cold rolling and flash annealing at 820 oC for 2 and 5 mins. The solidification segregation of Mo and W leads to a locally different microstructure after cold rolling (i.e., nanostructured β phase in the regions rich in Mo and W and plate-like martensite and β phase in regions relatively poor in Mo and W), which play a decisive role in the formation of the heterogeneous microstructure. Tensile tests showed that this alloy exhibited a superior combination of high yield strength (692 MPa), high tensile strength (1115 MPa), high work hardening rate and large uniform elongation (33.5%). More importantly, the new technique proposed in this work could be potentially applicable to other alloy systems with segregation problems.

/pdf/segregation-mediated-heterogeneous-structure-in-a-metastable-2xv5g80sro.pdf

Segregation mediated heterogeneous structure in a metastable β titanium alloy with a superior combination of strength and ductility

Twin recrystallization mechanisms and exceptional contribution to texture evolution during annealing in a magnesium alloy

https://research.birmingham.ac.uk/portal/files/55244960/Gao_et_al_Deformation_mechanisms_Acta_Materialia.pdf

Junheng Gao

Papers

Segregation mediated heterogeneous structure in a metastable β titanium alloy with a superior combination of strength and ductility

Twin recrystallization mechanisms and exceptional contribution to texture evolution during annealing in a magnesium alloy

Deformation mechanisms in a metastable beta titanium twinning induced plasticity alloy with high yield strength and high strain hardening rate

Individual effect of recrystallisation nucleation sites on texture weakening in a magnesium alloy: Part 1- double twins

Homogeneous corrosion of high pressure torsion treated Mg–Zn–Ca alloy in simulated body fluid