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对Ti-10V-2Fe-3Alβ型钛合金固溶处理后的β相组织进行原位拉伸、微观分析表明:应力诱发产生的α″马氏体为面心立方结构,与β相保持如下位向关系:(011)_β∥(011)_α″,[01(?)]_β∥[(?)00]_α″。某些晶粒,其滑移系处于有利位向;由于滑移系的开动,外加应力在该晶粒内的松弛,作用于晶粒上的有效应力小于马氏体形成所需的临界应力,而形成了板条组织。这种板条组织只表现为滑移,且大多在{110}晶面、沿<(?)11>方向进行。拉伸后位错在马氏体、滑移带形成的栅栏内呈缠结状,局部区域存在少数{(?)12)<111>变形孪晶。
The in-situ tension of β-phase microstructure after solution treatment of Ti-10V-2Fe-3Alβ titanium alloy shows that the stress-induced α “martensite has a face-centered cubic structure and remains with the β phase (011) _β // (011) _α ”, [01 (?)] _ Β // [(?) 00] _α". Some of the grains, whose slip system is in a favorable orientation; due to the slip system Starting, the relaxation of the applied stress in the grain causes the effective stress on the grain to be less than the critical stress required for the formation of the martensite, forming a lath that shows only slip and Mostly in the {110} crystal plane and in the direction of <(?) 11> After dislocation, the dislocations are tangled in the fences formed by martensite and slip band, and a few {{? <111> Deformation twins.