-1，并通過應(yīng)力-應(yīng)變曲線構(gòu)建其熱加工圖。結(jié)果表明，隨著銅含量的增加（0%Cu-304L，2.42%Cu-304L，3.60%Cu-304L），較好的熱加工溫度范圍從200 ℃降低到75 ℃。微觀組織分析發(fā)現(xiàn)：該材料失穩(wěn)的主要原因有局部流動(dòng)失穩(wěn)、剪切帶、空洞和裂紋；在熱變形過程中，塑性變形能在短時(shí)間內(nèi)轉(zhuǎn)化為熱量，導(dǎo)致變形材料局部溫度升高，這使得熔點(diǎn)相對(duì)較低的銅偏析區(qū)易融化從而形成孔洞，成為裂紋的來源，降低了材料的熱加工性。;The hot deformation behavior of Cu-bearing 304L stainless steel was studied by performing hot compression on Gleeble-3800 thermo mechanical simulator in the temperatures of 900~1150 ℃ and strain rates of 0.01~20 s-1, and the processing maps were established by stress-strain curves. Results show that the better processing temperature range is narrowed from 200 °C to 75 °C with the increase of copper content in the alloy (0wt%Cu-304L, 2.42wt%Cu-304L, 3.60wt%Cu-304L). The alloy microstructure characteri-zation reveals that the main causes of instability are local flow instability, shear zone, void and cracking. At the same time, it is found that the plastic deformation can be converted into heat in a short time, leading to the local temperature rise of the deformed materials, which makes the copper segregation area with relatively low melting point easy to form holes and to become the source of cracking, and then reduces the hot workability."/>