Heat treatment and pre-strain, tensile test of the material and four point bending test have been carried to obtain the mechanical property of the undegraded and degraded material at low temperature.

本文首先通过分析复合脆实验、拉伸实验和缺口试件四点弯曲实验的结果，考察比较某核压力容器钢在脆前后的室温和低温力学性能。

The microstructure deformation in the aging process of the alloy has been stated ,and the heteromorphy has been found the cause of the natural aging process of the 2011 alloy .

分析了工艺参数对合金力学性能的响,阐述了合金时效过程中的微观组织变,找出了2011合金自然时效进程缓慢的原因是异形核。

The purpose of the paper is to research the relation between meso-level structure and macromechanics characteristics of concrete and to popularize IEM, and to build a bridge between them.

本文旨在应用界面元方法研究混凝土的细观结构与宏观力学性能的关系，为混凝土力学性能的数值模拟及界面元的推广开辟新的途径。

The results indicated that argon plasma treatment had some effects on the mechanical properties of pylen nonwoven fabric, but had no effect on the application of pylen nonwoven fabric.

结果表明，通过氩气等离子体表面活，虽然对无纺丙纶非织造物的力学性能造成响，但是响丙纶非织造物的使用。

Abstract In this paper,the hardening and tempering treatment as well as the mechanical properties has been studied after the superstrength steel D6AC welded with another steel.

研究了D6AC超高强度钢与异种钢材焊后调及力学性能。

An investigation was made on the effect of rewelding on mechanical properties of Ultra-low carbon austenitic stainless steel based on mechanical properties test and microstructure examination.

通过对反复焊接1～5次的超低碳奥氏体锈钢力学性能的试验及金相组织的分析,研究了反复焊接对超低碳奥氏体锈钢力学性能的响。

With regards to the engineering practice of concrete gate frusta in Yangjialing Spillway, the mechanical properties of concrete gate frusta have been experimentally researched.

结合杨家岭溢洪道闸墩实际工程,对以温度控制指标为主的闸墩混凝土相关力学性能进行了试验研究。

The effect of ethylene comonomer content on the crystallization, mechanical and viscoelastic properties of VERSIFY copolymers was studied by DSC, DMTA, POM and WAXD.

通过DSC，DMTA，POM和WAXD等手段，研究了乙烯共聚单体含量的变对VERSIFY共聚物结晶性能、力学性能和粘弹性能的响。

Effects of master alloy of quasicrystal containing magnesium additions and solution treatment on microstructure and mechanical properties of AZ91 magnesium alloy were studied.

研究了镁基准晶中间合金和固溶工艺对AZ91合金显微组织和力学性能的响。

The mechanical performance of RGD7 high-energy nitroamine propellant had been greatly improved by adding bonding agent in the formulation of the propellant.

用配方体系中加入键合剂方法改善了高能硝胺发射药的力学性能。

Cast nylon modified with laurolactam was prepared by activated anionic copolymerization under the adiabatic condition.Its mechanical properties were studied.

在绝热条件下通过活阴离子共聚制备十二内酰胺改性浇铸尼龙,对其力学性能进行了研究。

Tests show that the re-dispersible emulsoid powder can remarkably improve mechanical property and durability of mortar.

试验证明,可再分散乳胶粉对砂浆的力学性能和耐久性能都有显著的改善。