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通过固溶前退火温度来调控2519A铝合金棒材固溶时的再结晶状态,以获得不同织构组态。采用X射线衍射分析研究了2519A铝合金棒材经150、200、300和350℃退火1 h后再经535℃×2 h固溶与直接经535℃×2 h固溶4种热处理工艺对合金织构和微观组织的影响。结果表明:2519A铝合金棒材直接经535℃×2 h固溶,挤压棒材强的〈13〉织构转变为〈110〉再结晶织构,而经上述4种温度退火和535℃×2 h固溶,织构分别演变为〈113〉,〈605〉,〈5110〉和〈7 214〉织构。退火后不固溶试样〈111〉织构和硬度值都保持不变。样品固溶发生再结晶的〈110〉织构与挤压〈13〉织构间可用40°〈111〉长大理论解释。
The recrystallization state of 2519A aluminum alloy bar was controlled by annealing temperature before solid solution to obtain different texture configurations. X-ray diffraction analysis of 2519A aluminum bar after annealing at 150, 200, 300 and 350 ℃ for 1 h followed by 535 ℃ × 2 h solution and direct heat treatment at 535 ℃ × 2 h for 4 h The effects of texture and microstructure. The results show that the microstructure of 2519A aluminum alloy rod is transformed into the <110> recrystallization texture directly by the solid solution at 535 ℃ for 2 h, and the strong < 13> And 535 ℃ for 2 h, the texture evolved into the texture of <113>, <605>, <5110> and <7 214> respectively. After annealing, the non-solution sample <111> texture and hardness values remain unchanged. The solid-solution recrystallization of sample <110> texture and extrusion <13> texture can be explained by the theory of 40 ° <111> growth.