A study of lattice elasticity from low entropy metals to medium and high entropy alloys

Journal Article · Sat Jan 31 00:00:00 EST 2015 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2015.01.011· OSTI ID:1265350

Huang, E-Wen ^[1]; Yu, Dunji ^[2]; Yeh, Jien-Wei ^[3]; Lee, Chi ^[3]; An, Ke ^[2]; Tu, Shan-Yi ^[4]

---

1. National Chiao Tung University, Hsinchu (Taiwan). Department of Materials Science and Engineering
2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS). Chemical and Engineering Materials Division
3. National Tsing Hua University, Hsinchu (Taiwan). Department of Materials Science and Engineering
4. National Chiao Tung University, Hsinchu (Taiwan). Department of Materials Science and Engineering; National Central University, Jhongli (Taiwan)

In this study, an equal-molar CoCrFeMnNi, face-centered-cubic high-entropy alloy system and a face-centered-cubic stainless steel described as a medium-entropy system, are measured by in situ neutron-diffraction experiments subjected to continuous tension at room and several elevated temperatures, respectively. With spallation neutron, the evolution of multiple diffraction peaks is collected simultaneously for lattice-elasticity study. Temperature variation of elastic stiffness of a single face-centered-cubic-phase Ni and a single face-centered-cubic-phase Fe are compared as low-entropy metals. In conclusion, the CoCrFeMnNi high-entropy alloy shows distinct lattice anisotropy.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1265350
• Journal Information: Scripta Materialia, Vol. 101; ISSN 1359-6462
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE