Strategies for residual stress adjustment in bulk metal forming
Strategies for residual stress adjustment in bulk metal forming
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DOI：
10.1007/s00419-021-01903-7
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发表时间：
2021-02
影响因子：
2.8
通讯作者：
A. Franceschi;J. Stahl;C. Kock;R. Selbmann;S. Ortmann-Ishkina;A. Jobst;M. Merklein;B. Kuhfuss;M. Bergmann;B. Behrens;W. Volk;P. Groche
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文献类型：
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作者：
A. Franceschi;J. Stahl;C. Kock;R. Selbmann;S. Ortmann-Ishkina;A. Jobst;M. Merklein;B. Kuhfuss;M. Bergmann;B. Behrens;W. Volk;P. Groche
体积成形技术家族包括以复杂的三维应力和应变状态为特征的工艺。除了形状和材料特性之外，残余应力也在块体金属成形工艺期间被修改。残余应力的状态影响重要的性能，如疲劳性能和耐腐蚀性。残余应力的调节可以通过后续工艺步骤进行，例如热处理或机械表面改性技术，如喷丸和深滚。然而，这些额外的制造步骤涉及额外的成本、更长的制造时间和对产品质量的有害影响。因此，优化的策略包括在成形过程中有针对性地引入残余应力。为了使这种方法，一个基本的理解的残余应力的产生依赖于成形参数的基本机制是必要的。本文综述了该技术的现状。根据工艺修改的基本原则，对不同体积成形工艺中残余应力的控制策略进行了分类。
The family of bulk forming technologies comprises processes characterised by a complex three-dimensional stress and strain state. Besides shape and material properties, also residual stresses are modified during a bulk metal forming process. The state of residual stresses affects important properties, like fatigue behaviour and corrosion resistance. An adjustment of the residual stresses is possible through subsequent process steps such as heat treatments or mechanical surface modification technologies, like shot peening and deep rolling. However, these additional manufacturing steps involve supplementary costs, longer manufacturing times and harmful effects on the product quality. Therefore, an optimized strategy consists in a targeted introduction of residual stresses during the forming processes. To enable this approach, a fundamental understanding of the underlying mechanisms of residual stress generation in dependence of the forming parameters is necessary. The current state of the art is reviewed in this paper. Strategies for the manipulation of the residual stresses in different bulk forming processes are classified according to the underlying principles of process modification.