1.(3) The heat transfer performance of the narrow-channel with a dimpled surface is under influence of Reynolds number, aspect ratio, dimple depth, dimple density, dimple print diameter.
(3)雷诺数、丁胞排布密度、丁胞凹陷深度和丁胞于壁面上的投影直径(丁胞直径)等等因素均对矩形窄缝丁胞流道的流动传热性能有较大影响。
2.The change of fracture modes of high nitrogen austenitic stainless steels with temperature decreasing is prolonged/equiaxial dimple→shallow dimple→mixture of brittle facet and ductile dimple→peeled off layers within dominated brittle facets.
高氮奥氏体不锈钢随温度的降低,断裂模式的变化规律为:拉长或等轴形韧窝→浅坑形韧窝→脆断刻面和韧窝混合型→脆断刻面为主,层状剥离出现
3.Fractography of the quenched tensile specimen under cycling treatment changes from dimple pattern to mixed fracture with dimple and tear ridges.
循环温度场作用下淬火态合金拉伸试样断口由韧窝型断裂向韧窝和撕裂棱混合型断裂转变。
4.We calculated the flowing and heat transfer in the narrow channel with the dimple surface when double dimple has difficult distance.
对单丁胞流道的流动传热情况进行数值研究,分析局部换热特性,通过温度场、流场的分布来研究丁胞内的流体流动情况和换热机理。
5.It′s point out that:1)With the increasing of mode Ⅱ component,the fracture surface vary from dimple with equalaxis to parabolic dimple around smooth zone.
结果表明，①随Ⅱ型分量的增加，裂纹启裂断口形貌逐渐由纯Ⅰ型的等轴韧窝形貌向纯Ⅱ型的抛物状韧窝形貌过渡。
6.Linear minor distance classifier is used to classify five typical fracture surface morphologies, including equiaxed dimple, elongated dimple, cleavage failure, fatigue and inter-granular cracking.
采用最小距离分类器,对等轴韧窝、拉长韧窝、解理、疲劳和沿晶等典 型断口进行分类.
7.The results show that the strength and elongation of the TIG welded joint is higher than that of the MMA at 77K. The fracture surface of 1Cr18Ni9Ti steel welded joint exhibits hybrid tough fracture of dimple and tear ridge , and dimple of the TIG welded joint fracture surface is tiny and uniform.
结果表明:在77K下,1Cr18Ni9Ti钢TIG焊接头的强度、伸长率均比MMA焊接头的高; 两者拉伸断口均为韧窝和撕裂棱混合型韧性断口,但TIG焊接头断口中韧窝的尺寸细小而均匀。
8.The SEM observations show that the fracture surface of LF6 alloy and welded joint exhibits hybrid tough fracture of dimple and tear ridge, and dimple becomes tiny and uniform with the decrease of temperature.
拉伸试样断口形貌分析结果显示 ,LF6合金及焊接接头的拉伸试样断口均为韧窝和撕裂棱混合型韧性断口 ,韧窝随温度的降低而变得细小、均匀
9.The fracture surface is dimple fracture for Ni_(40)Ti_(50)Fe_(10) alloy tested in vacuum. The tensile ductility of specimen decreases with the decreasing strain rate in air. The fracture surface tested in air shows a mixed mode of dimple fracture and cleavage patterns.
N i40Ti50Fe10合金在空气中的塑性随着应变速率的降低而减小,断口形貌也从韧窝塑性断口转变为韧窝塑性断口和解理脆性断口的混合断口.
10.The fracture surface of 1Cr18Ni9Ti steel welded joint exhibits hybrid tough fracture of dimple and tear ridge,and dimple becomes tiny and uniform with the temperature decreasing.
拉伸试样断口形貌分析结果显示,1Cr18Ni9Ti钢焊接接头的拉伸试样断口均为韧窝和撕裂棱混合型韧性断口,韧窝随温度的降低而变得细小、均匀。
