Official Answer
Answer
Asara lodi a cikin rashin tsagewa yawanci yana nuna shakatawa na danniya ko 'creep'. A cikin rashin nasarar bawul na sararin samaniya na baya-bayan nan, maɓuɓɓugan ruwa na 17-7PH sun rasa kashi 15 cikin ɗari na preload bayan sa'o'i 500 a 300 C. Cikakken bincike na ƙarfe ya nuna cewa yayin da 300 C ke cikin kewayon 'rated', haɗuwa da ma'ana mai mahimmanci (70 bisa dari na yawan amfanin ƙasa) da zafin jiki ya haɓaka motsi motsi a cikin laths martensitic. Maganin shine canza zuwa Inconel X-750, wanda ke da juriya mafi girma. Wata yuwuwar ita ce 'sawa' a wuraren hulɗa (crests); idan crests sun lalace da kawai 0.05 mm a cikin bazara tare da ƙarancin bazara, raguwar kaya na iya zama mai mahimmanci saboda dangantakar $ P = k \ cdot Δx$.
