Zhongyuan Qian

Materials Consultant

Professional Competence

Failure analysis and failure prevention in petroleum, petrochemical, utility, transportation and construction industries. Metallurgical and polymeric failure analysis and fractography.




Ph.D. in Materials Science and Engineering

Iowa State University, Ames, Iowa, 2006-2011

B.S. in Materials Science and Engineering

Shanghai JiaoTong University, Shanghai, China, 2002-2006


Experience and Work Highlights


Materials Consultant, Invetech LLC., Houston, TX (Feb 2012 – present)

  • Failure analysis and consultation for clients in construction, oil and gas, petrochemical, and automotive industries. Experience in physical metallurgy and corrosion. Specialty in both steels and non-ferrous metals.
  • Assess root cause of problems by using various materials testing methods. Working experience on various API, ASTM, ASME, AISI, DIN, GB standards and codes.
  • Expertise in Finite-Element modeling and Fitness-For-Service analysis to study structural integrity and materials mechanical behavior.


Materials Engineer (Student Intern), John Deere (Jan 2011 – May 2011)

  • Reviewed materials specifications and conducted testing on various components from John Deere factories and suppliers.
  • Conducted failure analysis and determined the root causes to help improve design and materials processing. Co-operated with local factory engineers to resolve the manufacturing problems.
  • Assisted technology communication and education between US and China plants.


Graduate Research Assistant, Iowa State University (Aug 2006- Dec 2011)


1. Mechanical Properties on Steels and Weldments

  • Studied the materials mechanical response under static and dynamic conditions. Designed materials processing to improve the reliability and performance of the components.
  • Finite-element modeling on thermal-mechanical response by using ANSYS and MatLab.
  • Cooperated with John Deere to established new X-Ray Diffractometer in Iowa State University to cut t residual stress testing cost by more than 50%.
  • Assisted development of new NDE magneto-striction method for stress measurement.


2. Development of Renewable Energy Materials

  • Materials Composition-Structure-Property studies and development of two types of renewable-energy materials at Ames National Laboratory (US Department of Energy): Magnetocaloric Rare Earth Intermetallic Compounds and Mechanochemical Hydrogen Storage Materials.
  • Expertise in advanced materials characterization: TEM, SEM, XRD, EDS, EELS, Auger, XRF, OES, thermal analysis etc.


Lab Administrator, Iowa State University (2006 – 2010)

  • Managed SEM lab, XRD lab and Metallographic lab at campus.
  • Metallography and chemical analysis on a wide range of metals, ceramics and polymers for both academic and industrial users.




The Effect of Specimen Dimension on Residual Stress Relaxation of Weldments, Proceedings of 9th European Conference of Residual Stress, France (2014), in press.


The Residual Stress Relaxation Behaviors of Weldments During Cyclic Loading, Journal of Metallurgical and Materials Transactions A, Vol. 44, Issue 7 (2013).


The Effect of Specimen Dimension on Residual Stress Relaxation of Carburized and Quenched Steels, Journal of Materials Science and Engineering A, Vol. 529 (2011).


Thermal Stability of RE5(SixGe1-x)3 plates in RE5(SixGe1-x)4 alloys, where RE= Gd and Ho, Journal of Intermetallics, Vol. 18, Issue 5 (2010).


Electron Microscopy Examination of R5T4 alloys, where R= Ho, Yb and Gd, and T= Si, Ge, Ga and Sb, Journal of Acta Materialia 57 (2009).