Mechanical properties of Ti_(3)AlC_(2)ceramics before and after heat treatment  

作　　者：Lei Yao Chun-Cheng Zhu Jiu-Xing Jiang Bai-Bin Zhou 

机构地区：[1]Key Laboratory of Design and Synthesis of Functional Materials and Green Catalysis,Harbin Normal University,Harbin,150025,China [2]College of Applied Sciences,Harbin University of Science and Technology,Harbin,150080,China

出　　处：《Rare Metals》2022年第8期2777-2782,共6页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No.51572064);the Natural Science Foundation of Heilongjiang Province in China (No.E201256)

摘　　要：Ti_(3)AIC_(2)ceramics were heat treated at the temperature from 1050 to 1450℃.Vickers hardness,fracture toughness,flexural strength and compressive strength of Ti_(3)AlC_(2)were tested and calculated before and after heat treatment,respectively.Ti_(3)AIC_(2)content,fracture toughness,flexural strength and compressive strength of Ti_(3)AIC_(2)first increase and then decrease,while Vickers hardness is just the opposite with the increase in temperature from 1050 to 1450℃C.After heat treatment at1250℃,Ti_(3)AIC_(2)content reaches the highest level of94.2 wt%,and fracture toughness,flexural strength and compressive strength reach the maximum values,which are6.4 MPa·m^(1/2),318 MPa and 662 MPa,respectively.Vickers hardness reduces to the lowest value of 2.9 GPa.Heat treatment does improve the strength and Ti_(3)AlC_(2)content,but reduces the hardness and optimizes the mechanical properties of Ti_(3)AlC_(2).

关 键 词：Ti_(3)AlC_(2) Heat treatment Mechanical properties 

分 类 号：TG148[一般工业技术—材料科学与工程] TG156[金属学及工艺—金属材料]