金属与合金的腐蚀.应力腐蚀试验.第7部分:慢速率应力试验方法ISO 7539-7-2005

[中文适用范围]： ISO 7539 的这一部分涉及进行慢应变率测试的方法，以研究金属对应力腐蚀开裂（包括氢引起的损伤）的敏感性。 在 ISO 7539 的这一部分中，术语“金属”也涵盖合金。 慢应变率测试适用于测试各种产品形式，包括板材、棒材、线材、带材和管材，以及这些产品的组件和焊接接头。 可以使用有缺口的样品以及光滑的样品。 该测试的真正好处是可以快速评估给定材料/介质组合对应力腐蚀开裂的敏感性。 [外文原描述]： ISO 7539-7:2005 covers procedures for conducting slow strain rate tests for investigating susceptibility of a metal to stress corrosion cracking, including hydrogen-induced failure. The term "metal" as used in this part of ISO 7539 includes alloys. Slow strain rate tests are adaptable for testing a wide variety of product forms, including plate, rod, wire, sheet and tubes, as well as composites of these and parts joined by welding. Notched specimens may be used, as well as initially plain specimens. The principal advantage of the test is the rapidity with which susceptibility to stress corrosion cracking of a particular metal/environment combination can be assessed.