Effects of in situ composite ceramics on the mechanical properties and microstructure of Fe-Cr-Ni alloys

被引：1

作者：

Chen, Chang ^{[1
]}

Shi, Sitao ^{[1
]}

Fang, Litong ^{[1
]}

Song, Qiang ^{[1
]}

Jiu, Shaowu ^{[1
]}

Chen, Yanxin ^{[1
]}

Yang, Jianfeng ^{[2
]}

机构：

[1] Xian Univ Architecture & Technol, Coll Mat Sci & Engn, Xian 710055, Peoples R China

[2] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

来源：

MATERIALS LETTERS | 2024年 / 363卷

关键词：

Ceramics; Composite materials; Mechanical property; Metals and alloys; Microstructure;

D O I：

10.1016/j.matlet.2024.136268

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fe-Cr-Ni composites reinforced with Al2O3-MgO composite ceramics were prepared via reactive hot pressing at 800 degrees C for 2 h under 30 MPa. The composites primarily comprised Cr0.19Fe0.7Ni0.11, Fe-Cr, magnesium aluminate spinel, Al2O3, and MgO phases. The mechanical properties and microstructure of the metal matrix composites changed with the changing in situ Al2O3-MgO content. The composite ceramic exhibited excellent mechanical properties (Vickers hardness = 5.59 GPa, bending strength = 244.59 MPa, and fracture toughness = 11.66 MPa<middle dot>m(1/2)) when Al2O3/(MgO + Al2O3) (mol/mol) was 0.6371 owing to the difference in the residual stress at the interface between the ceramic particles and metal matrix.

引用

页数：4

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