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Author:

Liu, Yawei (Liu, Yawei.) | Liu, Wei (Liu, Wei.) | Yang, Penghui (Yang, Penghui.) | Fu, Hanguang (Fu, Hanguang.) (Scholars:符寒光) | Yin, Wenhang (Yin, Wenhang.) | Jin, Tounan (Jin, Tounan.) | Chen, Zhengyang (Chen, Zhengyang.)

Indexed by:

EI Scopus SCIE

Abstract:

The effect of the tempering process on the microstructure evolution and hardness of 35 wt.%Cr-4 wt.%C Hypereutectic High Chromium Cast Iron (HHCCI) was studied by means of the scanning electron microscope and transmission electron microscope. The results show that with the increase in tempering temperature, the primary and eutectic carbides of HHCCI have no significant change, and the precipitation of secondary carbides in the matrix increases at first and then decreases. From the TEM analysis results, the secondary carbides after tempering are M23C6, which are rectangular, and with the extension of tempering time, a small part of eutectic carbides decompose and dissolve into the matrix, and the secondary carbides continue to precipitate and grow, and the length can reach several microns to more than 10 microns. With the increase in tempering temperature, the hardness of HHCCI increases, and the hardness tends to decrease when it exceeds 500 degrees C. After tempering for 6 h, the precipitation of secondary carbides in the matrix reaches the maximum, and the hardness of HHCCI reaches the maximum. After tempering holding time for more than 6 h, the hardness of HHCCI decreases continuously due to the aggregation and growth of secondary carbides.

Keyword:

tempering temperature microstructure evolution hardness hypereutectic high chromium cast iron holding time

Author Community:

  • [ 1 ] [Liu, Yawei]Beijing Univ Technol, Sch Mat Sci & Engn, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat,Minist Educ, Amount 100, Beijing 100124, Peoples R China
  • [ 2 ] [Liu, Wei]Beijing Univ Technol, Sch Mat Sci & Engn, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat,Minist Educ, Amount 100, Beijing 100124, Peoples R China
  • [ 3 ] [Fu, Hanguang]Beijing Univ Technol, Sch Mat Sci & Engn, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat,Minist Educ, Amount 100, Beijing 100124, Peoples R China
  • [ 4 ] [Jin, Tounan]Beijing Univ Technol, Sch Mat Sci & Engn, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat,Minist Educ, Amount 100, Beijing 100124, Peoples R China
  • [ 5 ] [Chen, Zhengyang]Beijing Univ Technol, Sch Mat Sci & Engn, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat,Minist Educ, Amount 100, Beijing 100124, Peoples R China
  • [ 6 ] [Yang, Penghui]Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
  • [ 7 ] [Yin, Wenhang]Gangnuo New Mat Co Ltd, Handan 057650, Hebei, Peoples R China

Reprint Author's Address:

  • [Fu, Hanguang]Beijing Univ Technol, Sch Mat Sci & Engn, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat,Minist Educ, Amount 100, Beijing 100124, Peoples R China;;

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Source :

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE

ISSN: 1059-9495

Year: 2023

Issue: 6

Volume: 33

Page: 2724-2735

2 . 3 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:26

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 3

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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