热处理后，材料的硬度和强度均有提高，但冲击韧度下降。
Through heat treatment, material hardness and strength increase, but impact toughness decreases.
考察了金属化工艺、镀镍及镀后热处理对接头剪切强度和钎焊效果的影响。
Influences of the metallizing technologic conditions, Ni plating and subsequent annealing on the joint shear strength were investigated.
本文主要介绍中碳合金结构钢经整体塑性变形、热处理后再进行表面冷变形工艺是提高材料疲劳强度的有效途径。
This paper mainly presents that constructional mid-carbon alloy steel, after bulk moulding deformation, heat treatment and cold surface deformation can raise fatigue strength of materials effectively.
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