冷轧对Ti-55531组织特征及时效行为和力学性能的影响

发布时间：2018-05-13 08:40

  本文选题：Ti- + 冷轧　； 参考：《稀有金属材料与工程》2015年07期

【摘要】：对全β固溶Ti-5Al-5Mo-5V-3Cr-1Zr进行冷轧与时效处理,采用XRD、TEM、硬度测试等手段研究冷轧对Ti-55531组织特征及后续时效过程中的相变、组织演变以及时效处理后力学性能的影响。结果表明:冷轧合金主要组织特征为ωisothermal发生回溶,没有出现存在于其他近β钛合金中的应力诱导α″。时效以后,冷轧过程中形成的位错等缺陷抑制ωathermal的析出,促进析出含量更高且更为细小的α相。冷轧合金硬度随时效温度的升高呈现先增大后降低的趋势,在400℃达到峰值。
[Abstract]:The effect of cold rolling and aging treatment on the microstructure, microstructure evolution and mechanical properties of Ti-55531 during aging was studied by means of cold rolling and aging treatment. The results show that the main microstructure of cold-rolled alloy is that 蠅 isothermal is redissolved, and no stress-induced 伪 "is found in other near 尾 -Ti alloys. After aging, dislocation and other defects formed in cold rolling process inhibit the precipitation of 蠅 athermal, and promote the precipitation of 伪 phase with higher content and smaller size. The hardness of cold rolled alloy increases firstly and then decreases, and reaches its peak at 400 鈩，

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