求翻译：在应力腐蚀裂纹金相分析的基础上，发现核电材料易发生沿晶扩展，扩展方向将不断变化，研究在K值恒定情况下，裂纹扩展方向对裂尖区域断裂参量的影响。是什么意思？

Nuclear materials prone to intergranular expansion, expansion of the direction changing, In the case of constant k value, the crack propagation direction of the crack tip region of fracture parameters on the basis of metallographic analysis of the stress corrosion cracking.

Stress corrosion cracking in Kim Sang-On the basis of our analysis and found that nuclear power material along crystal-prone extension, extended orientation will be changing in K value constant, cracks extend direction tearing apart the arguments of the broken tip areas.

In the stress corrosion crack metallography analysis foundation, discovered the nuclear electricity material easy to occur along the crystal expands, the expansion direction unceasingly will change, studies in the K value constant situation, fracture growth direction fission point region break param

On the basis of the metallographic analysis of stress corrosion cracking, nuclear material found along the Crystal-prone extension, expansion will constantly change, study in k-valued constant cases, crack propagation direction on crack tip fracture parameters of effects.

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