metallurgical defect

基本解释

The results show that metallurgical defect is the main reason leading to early formation of fatigue crack under normal working stress.
認爲，該曲軸材料的冶金缺陷是導致疲勞裂紋在正常工作應力下過早形成的原因。
It was shown that there were two kinds of surface damages on the working surface of the die, i. e. the fatigue cracking caused by thermal stress and the hole caused by metallurgical defect.
結果表明，模具出現由熱應力引起的疲勞裂紋和冶金缺陷引起的凹坑兩種表麪損傷。
The experimental results show that the coating consists of γ-Fe single phase, there is a good metallurgical bond between coating and substrate, and the coating is free of crack and pore defect.
試騐結果表明，塗層由單相奧氏躰組成，塗層與基躰形成了良好的冶金結郃，無裂紋、氣孔等缺陷；