Ductile-brittle transition of carbon alloyed Fe 40 Mn 40 Co 10 Cr 10 high entropy alloys
作者: L.B. ChenR. WeiK. TangJ. ZhangF. JiangJ. Sun
作者单位: 1State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China
2School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
刊名: Materials Letters, 2019, Vol.236 , pp.416-419
来源数据库: Elsevier Journal
DOI: 10.1016/j.matlet.2018.10.144
关键词: Metals and alloysDeformation and fractureHigh entropy alloysPhase transformationMicrostructureDuctile-brittle transition
原始语种摘要: Abstract(#br)The mechanical behavior of (Fe 40 Mn 40 Co 10 Cr 10 ) 100−x C x (x = 0, 2.2, 3.3 at.%) high entropy alloys (HEA) at various temperatures (298 K, 159 K and 77 K) was investigated. For Fe 40 Mn 40 Co 10 Cr 10 HEA, the jointly activated twinning and martensitic phase transformation concurrently increase the strength and ductility at 77 K. In contrast, twinning and phase transformation gradually vanish as temperature decreases for carbon alloyed HEAs, resulting in ductile-brittle transition. Our findings indicate that the additional interstitial carbon atoms increase the f.c.c. phase stability, and inhibit the deformability of Fe 40 Mn 40 Co 10 Cr 10 HEA at low temperature.
全文获取路径: Elsevier  (合作)
影响因子:2.224 (2012)

  • transition 转移
  • entropy 平均信息量
  • brittle 脆的
  • alloys 多组分胶
  • alloyed 熔合的
  • transformation 变换
  • carbon 
  • fracture 断口