热处理制度对大直径钛合金管材组织与性能的影响
发布时间:2018-12-13 16:10
【摘要】:采用4种热处理制度对TC4ELI钛合金大直径管材试样进行处理,研究不同热处理制度对其组织与性能的影响。结果表明:经750℃×1 h/AC普通退火处理后,组织为魏氏组织,具有较高的冲击韧性和断裂韧性,强度较低;经900℃×1 h/AC处理后,组织为晶界模糊的魏氏组织,同样具有较高的冲击韧性和断裂韧性,且强度较普通退火有所上升;经930℃×1 h/WQ+580℃×6 h/AC处理后,组织为魏氏组织,α片层较为细小,其断裂韧性(96.8 MPa·m1/2)、强度(892 MPa)、断面收缩率(42%)以及伸长率(16.0%)达到4种处理制度下的最大值,但冲击韧性急剧下降;经930℃×1 h/WQ+650℃×6 h/AC处理后,组织为魏氏组织,晶内α相片层取向呈编织状,具有较高的强度和断裂韧性,冲击韧性较差。
[Abstract]:The microstructure and properties of large diameter TC4ELI titanium alloy tubes were studied by four heat treatment systems. The results show that after annealing at 750 鈩,
本文编号:2376822
[Abstract]:The microstructure and properties of large diameter TC4ELI titanium alloy tubes were studied by four heat treatment systems. The results show that after annealing at 750 鈩,
本文编号:2376822
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