非合金的

This article has studied HG70 steel and HS-70 welding wires weldings,the welded joint,welding quality,and the welding operational performance,in restricts under the welding condition,Uses HS-70 welding wires,Experiments the steel plate the weld joint stretch,degree of hardness and the resilience test result indicated that,HG70 steel and HS-70 welding wires weld joints have the low crack sensitivity,The welding quality is good,Its weld joint has the fine mechanics performance,thus explained they had the fine welding match.

0前言非调质钢具有优良的使用性能和较低的生产成本，受到普遍重视。HG70钢是武钢开发的工程结构用钢，具有强度高、低温韧性好的特点。传统高强度钢一般碳当量较高，焊接性能较差。通过加入微量合金元素、采取新的控轧和调质工艺，使得HG70钢在提高强度的同时，亦保持了较高的韧性和较低的碳当量，因而从理论上讲HG70应具有较好的焊接性能，但HG70钢与HS-70焊丝的匹配情况，还有待于分析验证。

Our study rules out the effect of strain and composition alloying as the main factor of peak splitting. We attributed it to the existence of large amount of non-stoichiometry part in GaN/Si grown by MBE. A direct proof has been observed by HRTEM, which shows that the propagation of dislocations in the underlying layers could be blocked by using periodic AlN/GaN structure.

用三轴晶高分辨X射线衍射研究了Si(111)上生长的GaN中的应变组分问题，我们发现GaN的对称（0002）及非对称（10-12）峰在三轴晶配置下的ω-2θ扫描曲线都会发生劈裂，我们排除了应力和合金化的因素，认为在MBE方法生长的Si（111）上GaN外延层中存在一个占较大比例的稍微偏离化学配比的部分。

Surface relief caused by the formation of lower bainite in an Fe-C-Si-Mn alloy has been investigated by STM. It was discovered that the subunit which is the lowest structural unit observed by TEM is actually made up of sub-subunits. The surface relief due to the formation of sub-subunit is tent-shaped, and of a non-IPS type, which indicates that the sub-subunit cannot be formed by shear. The height of relief is 60-140nm, and the maximum shape deformation is ca.

用扫描隧道显微镜对Fe-C-Si-Mn合金中的下贝氏体浮突进行了观察研究发现用透射显微镜观察到的最小结构单元——亚单元是由更小的超亚单元组成的超亚单元的浮突为&帐篷&型，而非不变平面应变型，表明它不是切变形成；超亚单元的浮突高度为60-140nm，最大形状变型量约为0.23。

The evolvement of grain orientation for the sheets during this processing and the influence of channel clearance on it were investigated.The results indicate that the shear stress and compression stress are put on the sheet at the channel corner during equal channel angular rolling.And the shearing deformation on...

结果表明，在等径角轧制过程中，板材在模具转角处受到剪应力和压应力的作用；随通道间隙的增加，板材的变形由剪切变形演变为剪切+弯曲变形，甚至弯曲变形；由于剪应力的作用，AZ31镁合金板材的晶粒取向由普通轧制所形成的基面取向转变为等径角轧制后的非基面取向，随着剪切变形量的减小，基面沿轧制方向的偏转角度也逐渐减小。

It means AIMD is a reliable method to simulate liquid and amorphous systems. All the supercells employed in our paper contain more than 100 particles and the simulation time is about several picoseconds.

结果显示，我们的模拟虽然仅仅选取64（和100）个原子的立方超元胞和20皮秒的模拟时间，但是得到的数据与实验结果极为吻合，说明从头算分子动力学方法模拟非晶态合金是可靠的。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。