It shows that, at the low impact velocity (250 m/s), twin deformation is primary and slipping defor.
结果表明:在低速冲击下,HR2钢的变形是以孪生为主、滑移为辅的塑性变形,并未发生断裂;在高速冲击下,其变形是孪生和滑移的组合变形,断裂则是由沿晶界产生微孔洞、微裂纹并汇合形成大裂纹和少量穿晶断裂相混合引起的。
A theorem of twin power series and a group of twin identities are obtained.
设P,q为正整数,Lucas序列Un+2=PUn+1+q Un,U1=1,U2=p;Vn+2=PVn+1+q Vn,V0=2,V1=p,本文得到系数为Lucas数孪生幂级数定理与几组孪生恒等式。
This paper brought forward a pair of twin power series,that is,Fibonacci s power series ∑∞n=0f ~k_nx~nand Lucas s power series ∑∞n=0f ~k_nx~n,where fn is Fibonacci s number,ln is Lucas s number,k is positive integer.
笔者提出一对孪生幂级数,即Fibonacci幂级数∑∞n=0fnkxn与Lucas幂级数∑∞n=0lnkxn,这里fn为Fibonacci数,ln为Lucas数,k为正整数。
Influence of loading direction and strain rate on twinning of AZ31 magnesium alloy in plane-strain compression;
受力方式和变形速度对AZ31挤压板材平面应变过程中孪生的影响
Twinning of AZ31 magnesium alloy analyzed by EBSD technique;
AZ31镁合金孪生行为的EBSD研究
Artificial Induction of Twinning by an Active Immunization of Beef Cows Against Inhibin Partially Purified from Porcine Seminal Plasma;
应用猪精液抑制素主动免疫法诱导黄牛孪生
The results show that,when WC phase is as singlephase,it can generates twin-slip coordination deformation,thus the alloy exhibits high toughness,this high-plastic alloy is applicable for rock drilling.
同时对两种合金施加了一定的应变,研究了其滑移、孪生变形特性,结果表明,当WC为单一相时,WC相能产生孪生-滑移协调变形,从而具有较高的塑性。
The microstructure and twin deformation properties of WC phases were investigated by loading alloy specimen.
通过对硬质合金试样施加一定应力,使之产生应变,对其微观组织进行TEM分析,研究了孪生变形特性。