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走向凝固的钴基高温合金在原位拉伸研究中发现了两种裂尖塑性区位错结构，在拉伸轴为[511]时，从裂尖发射的是不全位错，在整个塑性区中位错始终以扩展位错的形式存在；在拉伸怕为[121]时，从裂尖发射的是全位错，位错在离开裂尖向试样内部运动过程中发生扩展分析了裂纹尖端应力状态对裂尖塑性区位错结构的影响。
Toward the solidification of the Co-based superalloy in situ tensile study found two kinds of crack tip plastic zone dislocation structure, when the stretching axis is [511], from the crack tip is not full dislocation, the entire plastic zone Dislocations always exist in the form of extended dislocations. At the moment of stretching, [121], all dislocations are emitted from the crack tip. Dislocations propagate away from the crack tip toward the interior of the specimen. The crack tip Effect of Stress State on Dislocation Structure in Plastic Zone of Crack Tip.