Universal function for grain boundary energies in bcc metals

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Chirayutthanasak O.; Sarochawikasit R.; Khongpia S.; Okita T.; Dangtip S.; Rohrer G.S.; Ratanaphan S.

ปีที่เผยแพร่ (ค.ศ.): 2024

Volume number: 240

Issue number: -

หน้าแรก: 115821

หน้าสุดท้าย: 115827

จำนวนหน้า: 7

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85174438167&doi=10.1016%2fj.scriptamat.2023.115821&partnerID=40&md5=4ae6037fd2762a0a910fe8d35b57c99d

ภาษา: English-Great Britain (EN-GB)

ดูบนเว็บไซต์ของสำนักพิมพ์

บทคัดย่อ

Constructing microstructure-property-processing relationships in polycrystalline metals remains a challenge mainly due to the lack of quantitative relations between grain boundary (GB) energies and populations as well as the macroscopic properties associated with the processing dependent microstructure. Here, we present a universal function for computing the energies of arbitrary GBs in body-centered cubic (bcc) metals. The effectiveness of the universal function in describing the variations of the GB energies is demonstrated by consistency between the output of the function and the energies of ∼ 2,500 GBs simulated by the embedded atom method. Large-scale comparisons between the interpolated energies and measured GB populations in W, Fe and ferritic steel reveal that the population distributions are governed by local energy minima located at the Σ1, Σ3, Σ9, Σ11, and Σ33a misorientations, representing a major step forward for the grain boundary engineering (GBE) of bcc metals. © 2023 Acta Materialia Inc.

คำสำคัญ

Grain boundary energy, Misorientation, Structure