文献类型：期刊文献

英文题名：On the Mechanical Properties and Thermal Conductivity of Compacted Graphite Cast Iron with Different Pearlite Contents

作者：Ren, Zhongwei Jiang, Hongwan Long, Shaolei Zou, Zhongfei

第一作者：任仲伟

通信作者：Jiang, HW[1];Jiang, HW[2]

机构：[1]Guizhou Inst Technol, Sch Mech Engn, Guiyang 550003, Peoples R China;[2]Guizhou Univ, Sch Mech Engn, Guiyang 550025, Peoples R China;[3]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China

第一机构：贵州理工学院机械工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Mech Engn, Guiyang 550003, Peoples R China;corresponding author), Guizhou Univ, Sch Mech Engn, Guiyang 550025, Peoples R China.|贵州理工学院机械工程学院;贵州理工学院;

年份：0

外文期刊名：JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE

收录：;EI(收录号：20230313407921);Scopus(收录号：2-s2.0-85146384275);WOS:【SCI-EXPANDED(收录号:WOS:000914723400003)】；

基金：AcknowledgmentsThis work is financially supported by National Natural Science Foundation of China (Grant No. 52005118), Science and Technology Plan Project of Guizhou Province (Grant No. QKHJC-ZK [2022] ZD026), Science and Technology Plan Project of Guiyang City (Grant No. ZKHT [2022]2-2), and High-level Talents Research Initiation Fund of Guizhou Institute of Technology (Grant No. 2018073).

语种：英文

外文关键词：cast iron; fracture surface; pearlite; tensile strength; thermal conductivity

摘要：This study investigated the mechanical properties and thermal conductivity of compacted graphite cast iron (CGI) with different pearlite concentrations. Four casts with different pearlite contents (4.12, 24.62, 53.24 and 87.74%) were obtained using heat treatments. As the pearlite content of the specimens increased from 4.12 to 87.74%, the tensile strength and hardness increased from 290.6 to 546.5 MPa, and from 114.3 to 238.6 HBS, respectively. The microscopic fracture surface observations of the CGI revealed that the quantity of tear ridges and cleavage planes decreased and increased, respectively, with an increasing pearlite concentration. The thermal conductivity decreased by 22.56% with an increasing pearlite content at the applied temperatures. Nevertheless, the thermal conductivity initially increased and then decreased with an increasing temperature, and its turning point was 473 K. Finally, the influencing mechanism of the pearlite content on the strength and thermal conductivity of CGI was illustrated.