DP Māhele ʻElua

Hana ʻia:

ʻO ka mea i kapa ʻia ʻo duplex stainless steel i loko o kāna hopena paʻa o ka ferrite phase a me austenite e hui i kēlā me kēia hapalua, ʻoi aku ka liʻiliʻi o ka ʻike e pono ai a hiki i 30%. I ka hihia o ka haʻahaʻa C, Cr maʻiʻo o 18% a 28%, Ni maʻiʻo o 3% a 10%. Aia kekahi mau kila i ka Mo, Cu, Nb, Ti, N a me nā mea hoʻohuihui ʻē aʻe.

 

Nā pono.

ʻO ke kila nā hiʻohiʻona o ka austenitic a me ka ferritic stainless steel,

1. ka hoʻohālikelike ʻana me ka ferrite, plasticity, kiʻekiʻe toughness, ʻaʻohe lumi wela brittleness, kū'ē i ka intergranular corrosion a me ka hana kuʻi ʻana ua hoʻomaikaʻi maikaʻi ʻia, ʻoiai hoʻi i ka ining iron Qualified stainless steel 475 ℃ brittleness a kiʻekiʻe thermal conductivity, me ka superplasticity a pēlā aku.

2. ʻO ka hoʻohālikelike ʻana me ka austenitic stainless steel, ka ikaika kiʻekiʻe a me ke kūʻē ʻana i ka intergranular corrosion a me ke kūʻē ʻana i ka chloride stress corrosion ua hoʻomaikaʻi nui ʻia.

3. Duplex kuhiliʻole kila he maikai loa kū'ē i pitting corrosion kū'ē, akā, i kekahi māhele o nickel kuhiliʻole kila.