Anqi ‘Angel’ Yu

PhD Candidate

ayu030@ucr.edu

FAVE SUPERHERO: Ironman
DEGREE TYPE: PhD
PROGRAM: Materials Science and Engineering
PROGRAM START DATE: September 2016

RESEARCH FOCUS:

Research focus on relationship between microstructure and mechanical properties of novel binary alloys (bioresorbable Fe-Mn alloys and microstructurally stable Cu-Ta alloys)

DESCRIPTION OF RESEARCH:

Nanocrystalline bioresorbable Fe-Mn alloys: Fe-Mn alloys are being considered for potential bioresorbable implant materials due to their reported combination of biocompatibility, strength, high stiffness and adjustable corrosion rate. We explore the effect of nanostructure and grain size to the corrosion rate and physical properties. Fe-Mn alloys are processed via multi-turn high-pressure torsion (HPT) to “top-down” refine the microstructure. In the meantime, Spark Plasma Sintering (SPS), as a powder metallurgy approach, is used to synthesize “bottom-up” nanostructure materials. The corrosion and mechanical results will be compared for the top-down and bottom-up nanostructured materials and the as-cast dendritic microstructures. The results forecast the ability to tailor microstructural features for controllable desirable mechanical response and biocompatibility. Thermal-stable Cu-Ta alloys: The research objective is to reveal fatigue crack growth (FCG) mechanisms in microstructurally-stable, fully dense, nanocrystalline (NC, d < 100nm) Cu-Ta alloys. To this end, the focused objectives are: 1) to gain a clear understanding of the true microstructural grain size effects on salient FCG mechanisms (e.g., cyclic plasticity) in stable, bulk NC alloys, and 2) to reconcile key theories and hypotheses pertaining to the mechanisms by which microstructure characteristics affect FCG behavior of NC alloys.

CURRENT GROUPS:

Mathaudhu Research Group

OTHER GROUPS/ORGS/CLUBS:

AWARDS:

  • Grad Slam, 04/23/2018, Riverside, CA, “Mechanical properties of nanocrystalline bioresorbable Fe-Mn alloy” (Audience Choice Winner).
  • The International Student Leadership Award at UCR, 05/29/2018, UCR, CA
  • National Science Foundation 2019 Grant Recipient, 06/26/2019, United States
  • First Prize of CIE-SOCAL presentation competition, 09/07/2019, CA

PRESENTATION TITLES:

(T for talk, P for Poster)

  • “Microstructure and Mechanical Behavior of Nanostructured Fe-Mn Bioresorbable Alloy” (P) at TMS 2017
  • “Mechanical Properties of Nanocrystalline Bioresorbable Fe-30wt%Mn Alloys” (T) at 2017 Nano and Heterogeneous Materials Workshop
  • “Mechanical Properties of Nanocrystalline Bioresorbable Fe-30wt%Mn Alloy” (T) at TMS2018
  • “Mechanical properties of nanocrystalline bioresorbable Fe-Mn alloy” (T) at AIST Chapter Meeting 2018
  • “Fundamental Investigation of Fatigue Crack Growth Mechanism in Microstructurally-Stable Nanocrystalline Alloys” (T) at NSF Director Grad Seminar
  • “Thermal Stability of Cu-Ta Alloys Fabricated by Cryomilling and Spark Plasma Sintering” (T) at UCR MSE Colloquium
  • “Thermal Stability of Cu-Ta Alloys Fabricated by Cryomilling and Spark Plasma Sintering” (P) at UCR MEGSA Symposium
  • “Thermal Stability of Cu-Ta Alloys Fabricated by Cryomilling and Spark Plasma Sintering” (T) at Powdermet2019
  • “Thermal Stability of Cu-Ta Alloys Fabricated by Cryomilling and Spark Plasma Sintering” (P) at Gordon Research Seminar, Physical Metallurgy
  • “Thermal Stability of Cu-Ta Alloys Fabricated by Cryomilling and Spark Plasma Sintering” (P) at Gordon Research Conference, Physical Metallrgy

CONFERENCES ATTENDED:  (A)/Presented at (T for talk, P for poster)

  • (P) at TMS 2017
  • (T) at 2017 Nano and Heterogeneous Materials Workshop
  • (T) at TMS2018
  • (T) at AIST Chapter Meeting 2018
  • (T) at NSF Director Grad Seminar
  • (T) at UCR MSE Colloquium
  • (P) at UCR MEGSA Symposium
  • (T) at Powdermet2019
  • (P) at Gordon Research Seminar, Physical Metallurgy
  • (P) at Gordon Research Conference, Physical Metallrgy

PAPERS:

REASONS FOR GRAD SCHOOL:

To gain a more systematic knowledge about engineering and to better understand interest and future plans by receiving further education

UNDERGRAD SCHOOL:

Zhejiang University of Technology

UNDERGRAD PROGRAM:

Materials Science and Engineering

UNDERGRAD RESEARCH:

INTERNSHIPS:

WORK EXPERIENCE:

AWARDS:

PREVIOUS GROUPS:

PRESENTATIONS/CONFERENCES ATTENDED:

REASONS FOR ENGINEERING:

To learn how to solve problems with science

CAREER ASPIRATIONS:

National Labs