Xifeng LI
,
Kaifeng ZHANG
,
Changli WANG
,
Wenbo HAN
,
Guofeng WANG
材料科学技术（英）
The amorphous Fe78Si9B13 ribbons were bend stress relaxed at various temperature well below the crystallization temperature (Tx) for different time. The effect of pre-annealing on the subsequent bend stress relaxation was examined. The variation of the microstructure and microhardness during bend stress relaxation process was studied using X-ray diffraction (XRD), atomic force microscopy (AFM) and Vickers microhardness test, respectively. Curvature radius of the amorphous Fe78Si9B13 ribbons decreased with increase bend stress relaxation temperature and time. The microhardness of the stress relaxed specimens increased with time at 300℃ due to the forming of nanocrystals during bend stress relaxation. The pre-annealing reduced the decrease rate of the curvature radius of stress relaxed specimens.
关键词:
Bend stress relaxation
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Wei GUO
,
Jitai NIU
,
Jinfan ZHAI
,
Changli WANG
,
Jie YU
,
Guangtao ZHOU
材料科学技术（英）
Through the vacuum diffusion bonding for SiCp/ZL101 aluminum matrix composite, the influence of bonding parameters on the joint properties was reported, with the aim to obtain optimal bonding parameters. The microstructure of joints was analyzed by means of optical microscope and scanning electron microscope in order to study the relationship between the macro-properties of joints and the microstructures. It was found that diffusion bonding could be used for bonding aluminum matrix composites successfully. Meanwhile, the properties of the matrix and the joint were all affected by some defects such as the reinforcement aggregation in aluminum matrix composites made by stirring casting.
关键词:
Aluminum matrix composite
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