본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Materials chemistry and physics v.211, 2018년, pp.302 - 311  

The effect of boron and zirconium on wrought structure and γ-γ′ lattice misfit characterization in nickel-based superalloy ATI 718Plus

Hosseini, Seyed Ali (Metallic Materials Research Center, Malek Ashtar University of Technology (MUT), Tehran, Iran ) ; Abbasi, Seyed Mehdi (Metallic Materials Research Center, Malek Ashtar University of Technology (MUT), Tehran, Iran ) ; Madar, Karim Zangeneh (Metallic Materials Research Center, Malek Ashtar University of Technology (MUT), Tehran, Iran ) ; Yazdi, Hossein Mohammad Karimi (Department of Materials Engineering, Karaj Branch, Islamic Azad University, Alborz, Iran ) ;
  • 초록  

    Abstract The effects of boron and zirconium additives on the wrought structural characteristics of the nickel-based superalloy ATI 718Plus, including grain size, delta and γ′ phases, and γ-γ′ misfit were investigated. For this purpose, five alloys with different contents of boron (0.00–0.016 wt%) and zirconium (0.0–0.1 wt%) were cast via the VIM and then purified via the VAR. After the rolling process and the heat treatment cycles, the microstructural investigation by OM, FESEM-EDS and phase analysis by the XRD analysis was performed. Although the results indicated that boron and zirconium had a slight effect on the reduction of grain size, delta phase was increased by 41% and 50% in the presence of these elements, respectively. In fact, boron and zirconium decreased in time and increased the temperature of delta phase nucleation by shifting the nose of the TTP diagram obtained for that to the upper left. The XRD analysis results revealed an increase in the lattice constant of the γ and γ′ phases as well as constrained and unconstrained lattice misfit of them in the presence of boron and zirconium. The maximum γ-γ′ misfit was determined for the alloy with the maximum boron and zirconium content (16 B100Z) as −0.3424 (constrained) and −0.9821 (unconstrained). In addition, the coherent elastic strain between γ and γ′ phases, increased to a higher positive value in the presence of these elements. Highlights The effects of boron and zirconium on the wrought structure of the alloy 718Plus were studied. Boron and zirconium have increased the amount of the delta phase on grain boundaries. The lattice misfit and elastic strain between the γ and γ′ phases increased in the presence of boron and zirconium.


  • 주제어

    718Plus .   Boron .   Zirconium .   Wrought structure .   γ-γ′ misfit.  

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역

원문보기

무료다운로드
  • 원문이 없습니다.

유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.

원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.

NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.

이 논문과 함께 출판된 논문 + 더보기