316奥氏体不锈钢引入孪晶的晶界工程

利用优化了的，包括3％预应变、1240K温度下退火72h的一步形变热处理工艺来引入孪晶的晶界工程，在316奥氏体不锈钢中引入了高比例（86％）的重合位置点阵（CSL）晶界。处理后的不锈钢在硫酸铁腐蚀实验的测试过程中表现出了良好的抗晶间腐蚀性能。在奥氏体不锈钢的晶界工程化过程中，超过82％的CSL晶界比例可能导致大角度晶界在每个阈值处的渗滤率非常低，并且产生良好的抗晶间腐蚀性。     

A Newly Developed Non, Destructive Tritium Measurement Technique and Its Application to V-4Cr-4Ti Alloy

A non-destructive and in-situ technique for the measurement of tritium in materials, namely β-ray-induced X-ray spectrometry （BIXS）, has been developed recently. In the present study a V-4Cr-4Ti alloy was pre-heated at 1000℃ for 2 h to form a recrystallization structure before the tritium absorption experiments were conducted. Firstly the hydrogen isotope gas was charazterized by means of a quadrupole mass spectrometer （QMS） and a small-sized ionization chamber. Then hydrogen isotope absorption tests of V-4Cr-4Ti alloy were performed at 400 ℃ and the atomic concentration of hydrogen isotope in V-4Cr-4Ti alloy was estimated as 0.17% with a tritium content of approximately 2.5 ppm. Experimental results indicate that BIXS is a quite useful tool for quantitatively measuring the tritium content and tritium distribution in the surface layers of vanadium alloys and no strong trapping effects of tritium exist in the pre-heated V-4Cr-4Ti alloy.     

钢水氧含量与钢水处理质量的关系

连铸钢的理化性能，以及成品使用性能，在极大程度上取决于非金属夹杂中的氧浓度。氧浓度首先取决于采用脱氧、变性处理、吹隋气的工艺，及浇铸前钢水炉外处理所有工艺进行的效果。本文以20钢为例，查明了总的氧浓度与夹杂物污染度和炉外处理工艺参数的关系，即与渣和钢水的氧化度(铝浓度)、温度等的关系。     

集成智能传感器的进展

集成智能传感器的进展ＬｏｈａｎＨ、Ｈｕｉｊｓｉｎｇ等１．引言继工业革命和信息革命之后正在到来的自动化革命需要许多传感器。在许多传感器应用中，最大的问题是各种传感器有其自己的特殊性。有些传感器提供输出电压，有些是电流，或电阻，或电容。本文目的是说明如何...