摘要
研究了固溶处理工艺对喷射沉积7090/SiC_p铝基复合材料的显微组织和力学性能的影响。结果表明:挤压态复合材料的基体合金中存在大量的第二相粒子;固溶处理后,晶粒发生不同程度的长大。在T6条件下,材料经470℃单级固溶处理后的布氏硬度值达到248HB。对试样采用470℃×0.5 h(水淬)热处理,其抗拉强度可达到601.46 MPa,屈服强度为421.16 MPa。
The effects of solution heat treatment processes on the microstructure and mechanical properties of the spray deposited 7090/SiCp composite were investigated. The experimental results show that there are a large amount of precipitate particles in the as-extruded composite. The size of the grains becomes larger than un-soluted samples. On the condition of T6 state treatment, the hardness of the samples treated by single solid-solution at 470℃ is 248HB. When the samples were treated under the conditions of 480℃ ×0.5h（water cooling）, the ultimate tensile strength of the samples is up to 601.46 MPa, and the yield strength is 421.16 MPa.
出处
《热加工工艺》
CSCD
北大核心
2007年第24期17-19,共3页
Hot Working Technology
基金
湖南省重点实验室基金(06FJ3041)
关键词
复合材料
固溶处理
时效处理
显微组织
力学性能
composite
solution heat treatment
ageing treatment
microstructure
mechanical properties
