【摘要】：為研究火災(zāi)后空間結(jié)構(gòu)材料的力學(xué)性能,對(duì)空間結(jié)構(gòu)中常用的Q235、Q345鋼材分別進(jìn)行了高溫處理、材料拉伸試驗(yàn)及里氏硬度試驗(yàn).得到了熱處理溫度、冷卻方式、鋼材型號(hào)等因素對(duì)鋼材抗拉強(qiáng)度、屈服強(qiáng)度及里氏硬度的影響規(guī)律.結(jié)果表明熱處理溫度小于500,℃時(shí),熱處理溫度對(duì)鋼材硬度及抗拉強(qiáng)度的影響不太顯著,當(dāng)熱處理溫度高于500,℃時(shí),熱處理溫度對(duì)鋼材硬度及抗拉強(qiáng)度的影響都較大.最后總結(jié)出熱處理后鋼材抗拉強(qiáng)度同里氏硬度相互關(guān)系,為火災(zāi)后空間結(jié)構(gòu)材料強(qiáng)度無(wú)損檢測(cè)提供一定的參考與支持.
[Abstract]:In order to study the mechanical properties of space structure materials after fire, the steel Q235 Q345, which is commonly used in space structure, was treated with high temperature, tensile test and hardness test respectively. The effects of heat treatment temperature, cooling mode and steel type on the tensile strength, yield strength and Riemann hardness of steel are obtained. The results show that when the heat treatment temperature is less than 500 鈩，

本文編號(hào)：2136732