韌窩斷口 的英文怎麼說
中文拼音 [rènwōduànkǒu]
韌窩斷口
英文
dimple fracture-
The fracture of ct20 alloy was of plastic dimples character at rt, while some holes and cleavage appeared at 20k, showing some brittle feature
Ct20合金室溫拉伸斷口以塑性韌窩為主要特徵， 20k拉伸時斷口上出現了一些孔洞和解理臺階，表現出一定的低溫脆斷特徵。There is a slight drop of the fcpr when the specimen s thickness increases. however, the thickness of the specimen exerts a great influence on kth and fatigue life ( n ) : the thicker specimen is, the higher fatigue life ( n ) becomes, and the greater kth shows. under control of the same conditions, the fcpr of am50 is not so high as that of az91. there are some correlations between load ratio ( r ) and the fatigue surface : when load ratio becomes great, small flat surfaces increase while dimples decrease
試樣厚度增大，穩態裂紋擴展速率略有減小。但是，試樣厚度影響試樣的疲勞壽命和門檻值：試樣越厚，疲勞壽命越長，門檻值越大；在試樣尺寸和加載條件相同的情況下， am50的疲勞裂紋擴展速率較az91小，疲勞壽命則比az91長。載荷比r影響試樣的斷口形貌：載荷比r越大，對應相同k值出的斷口小平面越多，韌窩越少。Finally, the fracture behavior of the wedge pressing stock under different temperatures was studied. as a result, the wedge pressing under 450 could avoid the step on the surface of the stock and
室溫拉伸微觀斷口為韌窩和撕裂棱混合型韌性斷口，材料屬延性斷裂。The relative density of the sample has reached as high as 97. 4 % of fully dense. the mean micro hardness has reached hv496. 3. the fractography of the fracture section of the tensile sample was characteristic of dimple typically which indicated that the fracture belong to ductile fracture
；試樣相對密度可以達到理論值的97 . 4 ；硬度方面由於激光立體成形工藝的特點，最後幾層的硬度比開始時的高，平均硬度達到了hv496 . 3 ；拉伸試樣的斷口形貌具有典型的韌窩特徵，屬于延性斷裂。The results have indicated that this titanium has a strong ability in superplastic, the fractographics presented big and deep dimple, so the alloy is of high toughness
另外，對tc6鈦合金的拉伸斷口形貌進行掃描電鏡分析。其結果表明，斷口形貌呈現大的韌窩，合金顯示較高的超塑性潛力。分享友人